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Round Diamond

Professional Brilliant Round Cut Diamond Carat MM Conversion

MM to CT Round Cut Size Comparison Tool

Brilliant Round Cut Diamond Carat MM

0.21 – 5.20 cts

Copyright © NGD DIAMONDS
ROUND CUT CARAT WEIGHTROUND CUT MM SIZE
0.21 - 0.22 ct3.80 - 3.90mm
0.23 - 0.24 ct3.90 - 4.00mm
0.25 - 0.26 ct4.00 - 4.10mm
0.26 - 0.27 ct4.10 - 4.20mm
0.27- 0.28 ct4.20 - 0.43 mm
0.30 -0.36 ct4.40 - 4.50 mm
0.40 - 0.45 ct4.60 - 4.70 mm
0.46 - 0.48 ct4.90 - 5.00 mm
0.50 - 0.57 ct5.10 - 5.30 mm
0.60 - 0.67 ct5.40 - 5.60 mm
0.70 - 0.77 ct5.70 - 5.90 mm
0.80 - 0.85 ct6.00 - 6.10 mm
0.90 - 0.95 ct6.20 - 6.30 mm
1.00 - 1.10 ct6.40 - 6.60 mm
1.22 - 1.26 ct6.70 - 6.80 mm
1.28 - 1.30 ct6.90 - 7.10 mm
1.50 - 1.55 ct7.20 - 7.40 mm
1.67 - 1.80 ct7.50 - 7.90 mm
2.00 - 2.10 ct8.10 - 8.30 mm
2.40 - 2.60 ct8.50 - 8.80 mm
2.70 - 2.80 ct8.90 - 9.10 mm
3.00 - 3.10 ct9.20 - 9.40 mm
3.30 - 3.40 ct9.50 - 9.60 mm
3.50 - 3.70 ct6.70 - 7.80 mm
3.80 - 3.90 ct9.90 - 10.00 mm
4.00 - 4.10 ct10.10 - 10.20 mm
3.30 - 4.40 ct10.30 - 10.50 mm
4.50 - 4.60 ct10.60 - 10.70 mm
4.70 - 4.80 ct10.80 - 10.90 mm
4.90 - 4.99 ct10.90 - 11.00 mm
5.00 - 5.20 ct11.10 - 11.20 mm

Round Cut Melee Diamond Conversion of CT MM / MM to Carat And Sieve Size Chart

0.005 – 0.20 cts​

Copyright © NGD DIAMONDS
ROUND CUT CARAT WEIGHTROUND CUT MM SIZECTS/PCSROUND CUT SIEVE SIZES
0.005 ct0.90-1.10 mm1/200+000/-0
0.006 ct1.10-1.15 mm1/175+0/-1
0.007 ct1.15-1.20 mm1/150+1/-1.5
0.008 ct1.20-1.25 mm1/120+1.5/-2
0.009 ct1.25-1.30 mm1/100+2/-2.5
0.01 ct130-1.35 mm1/100+2.5/-3
0.011 ct1.35-1.40 mm1/100+3/-3.5
0.012 ct1.40-1.45 mm1/80+3.5/-4
0.013 ct1.45-1.50 mm1/80+4/-4.5
0.014 ct1.50-1.55 mm1/70+4.5/-5
0.016 ct1.55-1.60 mm1/60+5/-5.5
0.018 ct1.60-1.70 mm1/50+5.5/-6
0.021 ct1.70-1.80 mm1/50+6/-6.5
0.025 ct1.80-1.90 mm1/40+6.5/-7
0.029 ct1.90-2.00 mm1/30+7/-7.5
0.035 ct2.00-2.10 mm1/30+7.5/-8
0.039 ct2.10-2.20 mm1/25 +8/-8.5
0.044 ct2.20-2.30 mm1/25 +8.5/-9
0.052 ct2.30-2.40 mm1/20 +9/-9.5
0.058 ct2.40-2.50 mm1/20 +9.5/-10
0.069 ct2.50-2.60 mm1/15+10/-10.5
0.074 ct2.60-2.70 mm1/15+10.5/-11
0.078 ct2.70-2.80 mm1/12+11/-11.5
0.086 ct2.80-2.90 mm1/12+11.5/-12
0.095 ct2.90-3.00 mm1/10+12/-12.5
0.108 ct3.00-3.10 mm1/10+12.5/-13
0.116 ct3.10-3.20 mm1/8 +13/-13.5
0.13 ct3.20-3.30 mm1/8 +13.5/-14
0.145 ct3.30-3.40 mm1/6+14/-14.5
0.155 ct3.40-3.50 mm1/6+14.5/-15
0.165 ct3.50-3.60 mm1/6+15/-15.5
0.19 ct3.60-3.70 mm1/5+15.5/-15.75
0.20 ct3.70-3.80 mm1/5+15.75/-16.5
i-2

What is the Ideal Table and Depth for the Brilliant Round Cut Diamond?

EXCELLENTVERY GOODGOOD

Table - %

53% - 58%

52% - 53%

or

58% - 60%

51%

or

61% - 64%

Depth - %

59% - 62.3%

58% - 58.9% 

or

62.4% - 63.5%

57.5% - 57.9%

or

63.6% - 64.1%

Crown Angle

34 - 34.9

32.1 - 33.9

or

35 - 35.9

30.1 - 32

or

36 - 37.9

Pavilion Depth - %

42.8% - 43.2%

42% - 42.7% 

or

43.3% - 43.9%

41% - 41.9%

or

44%- 45.5%

Girdle

Thin

to

Sl. Thick

Very Thin 

to

Sl. Thick

Very Thin 

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?

EXCELLENT / VERY GOODGOOD

Length To Width Ratio

0.99 - 1.010.98-1.01
i-1

Professional Princess Diamond Size Chart

Detailed Carat to MM / MM to Carat Princess Cut Diamond Size Chart

Princess Cut Diamond MM Size Chart / CT Conversion Chart

Copyright © NGD DIAMONDS
PRINCESS CARAT WEIGHTPRINCESS CUT MM SIZE
0.04 - 0.05 ct.1.90 - 2.00 mm.
0.05 - 0.06 ct.2.10 - 2.20 mm.
0.07 - 0.08 ct.2.30 - 2.40 mm.
0.09 - 0,11 ct.2.50 - 2.60 mm.
0.12 - 0.13 ct.2.70 - 2.80 mm.
0.14 - 0.17 ct.2.90 - 3.00 mm.
0.18 - 0.21 ct.3.10 - 3.20 mm.
0.22 - 0.24 ct.3.30 - 3.40 mm.
0.25 - 0.28 ct.3.50 - 3.60 mm.
0.30 - 0.35 ct.3.70 - 3.80 mm.
0.35 - 0.40 ct.3.90 - 4.00 mm.
0.40 - 0.45 ct.4.10 - 4.20 mm.
0.45 - 0.50 ct.4.30 - 4.40 mm.
0.55 - 0.60 ct.4.50 - 4.60 mm.
0.60 - 0.65 ct.4.70 - 4.80 mm.
0.70 - 0.75 ct.4.90 - 5.00 mm.
Copyright © NGD DIAMONDS
PRINCESS CARAT WEIGHTPRINCESS CUT MM SIZE
0.80 - 0.89 ct.5.10 - 5.30 mm.
0.90 - 0.98 ct.5.30 - 5.50 mm.
1.00 - 1.15 ct 5.40 - 5.60 mm.
1.20 - 1.27 ct5.40 - 5.90 mm.
1.30 - 1.45 ct5.80 - 6.40 mm.
1.50 - 1.60 ct6.00 - 6.70 mm.
1.65 - 1.80 ct6.50 - 7.00 mm.
2.00 - 2.30 ct6.80 - 7.50 mm.
2.40 - 2.60 ct7.20 - 7.90 mm.
2.70 - 2.90 ct7.50 - 8.10 mm.
3.00 - 3.30 ct7.70 - 8.50 mm.
3.40 - 3.60 ct8.20 - 8.60 mm.
3.70 -3.90 ct8.30 - 8.70 mm.
4.00 - 4.20 ct8.40 - 9.10 mm.
4.40 - 4.70 ct9.00 - 9.60 mm.
5.00 - 5.25 ct9.20 - 10.00 mm.
image-1

What is the Ideal Diamond Depth and Table for the Princess Cut?

EXCELLENTVERY GOODGOOD

Table - %

67% - 72%

59% - 66%

or

73% - 75%

59% - 66%

or

73% - 75%

Depth - %

64%

75%

58% -

or

75.1% - 80%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?

EXCELLENT / VERY GOODGOOD

Length To Width Ratio

1.00 - 1.031.04 - 1.05
i-1

Professional Square Cushion Cut Diamond Size Chart

Carat to MM / MM to Carat Square Cushion Cut Diamond Size Comparison Tool

Cushion Cut MM to Carat Diamond Conversion Charts

0.04 - 0.69 cts

Copyright © NGD DIAMONDS
PRINCESS CARAT WEIGHTPRINCESS CUT MM SIZE
0.04 - 0.05 ct.1.90 - 2.00 mm.
0.05 - 0.06 ct.2.10 - 2.20 mm.
0.07 - 0.08 ct.2.30 - 2.40 mm.
0.09 - 0.10 ct.2.50 - 2.60 mm.
0.11 -0.12 ct.2.70 - 2.80 mm.
0.13 - 0.15 ct.2.90 - 3.00 mm.
0.16 - 0.18 ct.3.10 - 3.20 mm.
0.20 - 0.22 ct.3.20 - 3.40 mm.
0.23 - 0.26 ct.3.50 - 3.60 mm.
0.28 - 0.31 ct.3.70 - 3.80 mm.
0.32 - 0.35 ct.3.80 - 3.90 mm.
0.38 - 0.40 ct.4.10 - 4.20 mm.
0.43 - 0.47 ct.4.20 - 4.40 mm.
0.50 - 0.55 ct.4.40 - 4.60 mm.
0.56 - 0.58 ct.4.60 - 4.80 mm.
0.60 - 0.69 ct.4.80 - 5.00 mm.

0.70 - 5.25 cts

Copyright © NGD DIAMONDS
PRINCESS CARAT WEIGHTPRINCESS CUT MM SIZE
0.70 - 0.77 ct.5.00 - 5.20 mm.
0.80 - 0.98 ct.5.30 - 5.40 mm.
1.00 - 1.15 ct 5.40 - 5.60 mm.
1.20 - 1.27 ct5.70 - 6.50 mm.
1.30 - 1.45 ct6.10 - 6.90 mm.
1.50 - 1.60 ct6.40 - 7.10 mm.
1.65 - 1.80 ct6.60 - 7.30 mm.
2.00 - 2.30 ct7.00 - 7.80 mm.
2.40 - 2.60 ct7.70 - 8.30 mm.
2.70 - 2.90 ct8.00 - 8.50 mm.
3.00 - 3.30 ct8.10 - 8.70 mm.
3.40 - 3.60 ct8.40 - 8.90 mm.
3.70 -3.90 ct8.70 - 9.20 mm.
4.00 - 4.20 ct9.00 - 9.60 mm.
4.40 - 4.70 ct9.40 - 9.70 mm.
5.00 - 5.25 ct9.80 - 10.50 mm.
image-1

What is the Ideal Diamond Depth and Table for the Square Cushion Cut?

EXCELLENTVERY GOODGOOD
Table - %61 %- 67%

58% - 60% 

or

65% - 70%

56% - 57% 

or

70% - 71%

Depth - %61% - 67%

58% - 60.9% 

or

67.1% - 70%

56% - 57.9% 

or

70.1% - 71%

GirdleVery ThinSlightly Thick

Very Thin 

to

Thick

CuletNoneVery SmallSmall

What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?

EXCELLENT / VERY GOODGOOD

Length To Width Ratio

1.00 - 1.031.04 - 1.05
i-1

Rectangular Cushion Cut Diamond Size Chart

CT to MM / MM to CT Rectangular Cushion Cut Diamond Size Chart

Professional Rectangular Cushion Cut MM to CT Conversion Tool

0.08 - 0.89 cts

Copyright © NGD DIAMONDS
RECTANGULAR CUSHION CARAT WEIGHTRECTANGULAR CUSHION MM LENGTHRECTANGULAR CUSHION MM WIDTH
0.08 - 0.11 ct.2.90 - 3.10 mm.2.30 - 2.40 mm.
0.10 - 0.13 ct.3.20 - 3.40 mm.2.40 - 2.50 mm.
0.12 - 0.15 ct.3.30 - 3.50 mm.2.40 - 2.60 mm.
0.13 - 0.16 ct.3.50 - 3.60 mm.2.60 - 2.80 mm.
0.16 - 0.19 ct.3.70 - 3.80 mm.2.90 - 3.10 mm.
0.17 - 0.20 ct.3.90 - 4.00 mm.2.90 - 3.10 mm.
0.21 - 0.22 ct.4.10 - 4.20 mm.3.10 - 3.20 mm.
0.23 - 0.27 ct.4.30 - 4.40 mm.3.20 - 3.30 mm.
0.28 - 0.36 ct.4.40 - 4.50 mm.3.30 - 3.50 mm.
0.36 - 0.42 ct.4.70 - 4.80 mm.3.40 - 3.80 mm.
0.43 - 0.48 ct.4.90 - 5.00 mm.3.60 - 3.90 mm.
0.49 - 0.52 ct.5.00 - 5.20 mm.4.00 - 4.20 mm.
0.52 - 0.55 ct.5.20 - 5.40 mm.4.00 - 4.20 mm.
0.60 - 0.67 ct.5.40 - 5.60 mm.4.30 - 4.50 mm.
0.70 - 0.75 ct.5.60 - 5.70 mm.4.50 - 4.60 mm.
0.80 - 0.89 ct.5.70 - 6.00 mm.4.50 - 4.60 mm.

0.90 - 5.25 cts

Copyright © NGD DIAMONDS
RECTANGULAR CUSHION CARAT WEIGHTRECTANGULAR CUSHION MM LENGTHRECTANGULAR CUSHION MM WIDTH
1.00 - 1.15 ct.6.50 - 6.80 mm.4.90 - 5.10 mm.
1.20 - 1.27 ct6.80 - 7.30 mm.5.40 - 5.70 mm.
1.30 - 1.45 ct7.00 - 7.40 mm.5.80 - 5.90 mm.
1.50 - 1.60 ct7.30 - 7.90 mm.5.80 - 6.20 mm.
1.65 - 1.80 ct7.50 - 8.10 mm.6.10 - 6.50 mm.
2.00 - 2.30 ct8.00 - 8.60 mm.6.40 - 6.80 mm.
2.40 - 2.60 ct8.50 - 9.00 mm.6.90 - 7.20 mm.
2.70 - 2.90 ct8.90 - 9.40 mm.7.10 - 7.30 mm.
3.00 - 3.30 ct9.20 - 9.80 mm.7.30 - 7.70 mm.
3.40 - 3.60 ct9.40 - 10.00 mm.7.60 - 7.90 mm.
3.70 -3.90 ct9.90 - 11.00 mm.8.00 - 8.40 mm.
4.00 - 4.20 ct10.00 - 11.00 mm.8.10 - 8.50 mm.
4.40 - 4.70 ct10.70 - 11.50 mm.8.40 - 8.70 mm.
5.00 - 5.25 ct11.00- 11.70 mm.8.70 - 9.10 mm.
0.90 - 0.98 ct. 6.10 - 6.40 mm. 4.70 - 4.90 mm.
image-2

What is the Recommended Diamond Depth and Table for the Rectangular Cushion Cut?

EXCELLENTVERY GOODGOOD
Table - %61% - 69%

57% - 60%

or

70% - 72%

54% - 56%

or

73% - 74%

Depth - %61% - 67%

59% - 59.9%

or

70.1% - 74%

54% - 56.9%

or

74.1% - 78%

GirdleVery Thin toSlightly Thick

Very Thin

to

Thick

CuletNoneVery SmallSmall

What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?

EXCELLENTVERY GOODGOOD
Length To Width Ratio1.20-1.30

1.15 - 1.25

or

1.29 - 1.35

1.10 - 1.15

or

1.36 - 1.40

i-1

Professional Oval Diamond Size Chart

Detailed Oval Cut Size Comparison From CT to MM / MM to CT by Gemologists

Oval Cut Diamond Conversion Tool From CT to MM / MM to CT

0.04 - 1.15 cts.

Copyright © NGD DIAMONDS
OVAL CUT CARAT WEIGHTOVAL CUT LENGTH MM SIZEOVAL CUT WIDTH MM SIZE
0.04 - 0.07 ct2.50 - 3.40 mm.2.00 - 2.40 mm.
0.08 - 0.12 ct3.40 - 4.80 mm. 2.40 - 3.00 mm.
0.13 - 0.17 ct3.90 - 4.40 mm. 2.80 -3.10 mm.
0.18 - 0.22 ct4.10 - 4.60 mm.3.00 - 3.40 mm.
0.23 - 0.28 ct4.50 - 5.10 mm. 3.30 - 3.60 mm.
0.30 - 0.37 ct4.90 - 5.60 mm. 3.60 - 4.00 mm.
0.40 - 0.48 ct5.60 - 6.00 mm.4.00 - 4.40 mm.
0.50 - 0.58 ct5.90 - 6.30 mm. 4.40 - 4.60 mm.
0.60 - 0.69 ct6.30 - 6.70 mm.4.60 - 4.80 mm.
0.70 -0.78 ct6.60 - 6.80 mm.4.80 - 5.20 mm.
0.80 - 0.88 ct6.90 - 7.30 mm.5.10 - 5.40 mm.
0.90 - 0.98 ct7.20 - 7.80 mm.5.20 - 5.50 mm.
1.00 - 1.15 ct7.90 - 8.20 mm.5.50 - 5.80 mm.

1.20 to 1.15

Copyright © NGD DIAMONDS
OVAL CUT CARAT WEIGHTOVAL CUT LENGTH MM SIZEOVAL CUT WIDTH MM SIZE
1.20 - 1.27 ct8.10 -8.30 mm.6.00 - 6.10 mm.
1.30 - 1.45 ct8.40 - 8.50 mm. 6.00 - 6.20 mm.
1.50 - 1.60 ct8.50 - 8.80 mm. 6.20 -6.40 mm.
1.65 - 1.80 ct8.90 - 9.60 mm.6.60 - 6.80 mm.
2.00 - 2.30 ct9.80 - 10.10 mm. 7.10 - 7.30 mm.
2.40 - 2.60 ct10.30 -10.70 mm. 7.50 - 7.80 mm.
2.70 - 2.90 ct10.70 - 11.00 mm.7.80 - 7.90 mm.
3.00 - 3.30 ct10.90 - 11.60 mm. 8.00 - 8.40mm.
3.40 - 3.60 ct11.50 - 12.00 mm.8.40 - 8.70 mm.
3.70 -3.90 ct12.00 - 12.35 mm.8.80 - 8.90 mm.
4.00 - 4.20 ct12.25 - 12.50 mm.8.80 - 9.00 mm.
4.40 - 4.70 ct12.40 - 13.00 mm.9.00 - 9.30 mm.
5.00 - 5.25 ct13.00 - 13.60 mm.9.40 - 9.70 mm.
image-1

What is the Ideal Diamond Depth and Table for the Oval Cut?

Oval Cut Diamond Recommended Proportions Guide
EXCELLENTVERY GOODGOOD

Table - %

67% - 72%

59% - 66%

or

73% - 75%

59% - 66%

or

73% - 75%

Depth - %

64%

75%

58% - 63.9%

or

75.1% - 80%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?

EXCELLENTVERY GOODGOOD

Length To Width Ratio

1.00 - 1.03

1.30 - 1.34

or

1.51 - 1.55

1.25 - 1.29 

or

1.56 - 1.60

i-1

Professional Pear Shape Diamond Size Chart & Conversion Tool

Pear Cut Diamond Size Comparison Tool - CT to MM / MM to CT

0.4 - 1.15 cts

Copyright © NGD DIAMONDS
PEAR SHAPE CARAT WEIGHTLENGTH MM SIZEWIDTH MM SIZE
0.04 - 0.07 ct. 3.30 - 3.70 mm.2.00 - 2.40 mm.
0.08 - 0.12 ct. 3.60 - 4.20 mm. 2.40 - 2.80 mm.
0.13 - 0.17 ct. 4.10 - 4.80 mm. 2.90 - 3.20 mm.
0.18 - 0.22 ct. 4.70 - 5.20 mm.3.10 - 3.30 mm.
0.23 - 0.28 ct.5.10 - 5.80 mm. 3.40 - 2.70 mm.
0.30 - 0.37 ct. 5.70 - 6.10 mm.3.60 - 4.00 mm.
0.40 - 0.48 ct. 6.10 - 6.60 mm.3.90 - 4.40 mm.
0.50 - 0.59 ct. 6.50 - 7.30 mm. 4.30 - 4.60 mm.
0.60 - 0.67 ct.6.80 - 7.40 mm.4.60 - 4.80 mm.
0.70 - 0.78 ct. 7.30 - 8.00 mm.4.80 - 5.00 mm.
0.80 - 0.88 ct.8.00 - 8.40 mm.5.10 - 5.30 mm.
0.90 - 0.98 ct.8.20 - 8.50 mm.5.30 - 5.50 mm.
1.00 -1.15 ct.8.40 - 8.90 mm.5.60 - 5.80 mm.

1.10 - 5.25 cts

Copyright © NGD DIAMONDS
PEAR SHAPE CARAT WEIGHTLENGTH MM SIZEWIDTH MM SIZE
1.20 - 1.27 ct9.00 - 9.50 mm.5.90 - 6.00 mm.
1.30 - 1.45 ct9.30 - 9.60 mm. 6.10 - 6.20 mm.
1.50 - 1.60 ct9.70 - 10.20 mm. 6.30 - 6.50 mm.
1.65 - 1.80 ct10.00 - 10.50 mm.6.50 - 6.70 mm.
2.00 - 2.30 ct10.70 - 11.50 mm. 7.00 - 7.30 mm.
2.40 - 2.60 ct11.50 - 11.80 mm.7.40 - 7.70 mm.
2.70 - 2.90 ct11.70 - 12.30 mm.7.70 - 7.80 mm.
3.00 - 3.30 ct12.40 - 13.00 mm. 8.00 - 8.20 mm.
3.40 - 3.60 ct12.70 - 13.40 mm.8.30 - 8.50 mm.
3.70 -3.90 ct13.30 - 13.70 mm.8.50 - 8.70 mm.
4.00 - 4.20 ct13.60 - 14.00 mm.8.70 - 8.90 mm.
4.40 - 4.70 ct14.00 - 14.30 mm.9.00 - 9.20 mm.
5.00 - 5.25 ct14.50 - 15.50 mm.9.30 - 9.70 mm.

What is the Ideal Diamond Depth and Table for the Pear Cut?

Recommended Proportions Guide
image-1
EXCELLENTVERY GOODGOOD

Table - %

53% - 63%

52% - 64%

or

64% - 65%

51%

or

66% - 68%

Depth - %

58% - 62%

56% - 57.9%

or

62.1% - 66%

53% - 55.9%

or

66.1% - 71%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Pear Cut Diamond Length to Width Ratio?

EXCELLENT VERY GOODGOOD

Length To Width Ratio

1.45 - 1.55

1.40 - 1.45

or

1.56 - 1.65

1.35 - 1.39 

or

1.66 - 1.80

i-1

Professional Emerald Cut Diamond Size Chart

Emerald Shaped Diamond Size Comparison From CT to MM / MM to CT

Emerald Cut Diamond Conversion Charts From CT to MM / MM to CT

0.08 - 0.74 cts.

Copyright © NGD DIAMONDS
EMERALD CUT CARAT WEIGHTEMERALD CUT LENGTH MM SIZEEMERALD CUT WIDTH MM SIZE
0.08 - 0.11 ct.2.90 - 3.20 mm.2.10 - 2.30 mm.
0.12 - 0.14 ct.3.20 - 3.40 mm.2.30 - 2.50 mm.
0.13 - 0.15 ct.3.30 - 3.50 mm.2.30 - 2.70 mm.
0.14 - 0.16 ct.3.50 - 3.60 mm.2.60 - 2.80 mm.
0.16 - 0.17 ct.3.70 - 3.80 mm.2.70 - 2.80 mm.
0.18 - 0.21 ct.3.90 - 4.00 mm.2.70 - 2.90 mm.
0.22 - 0.24 ct.4.10 - 4.20 mm.2.90 - 3.10 mm.
0.25 - 0.28 ct.4.30 - 4.40 mm.3.10 - 3.30 mm.
0.30 - 0.34 ct.4.50 - 4.60 mm.3.20 - 3.40 mm.
0.35 - 0.38 ct.4.70 - 4.80 mm.3.40 - 3.50 mm.
0.40 - 0.44 ct.4.90 - 5.00 mm.3.50 - 3.60 mm.
0.45 - 0.48 ct.5.00 - 5.20 mm.3.60 - 3.80 mm.
0.50 - 0.53 ct.5.20 - 5.50 mm.3.80 - 4.00 mm.
0.54 - 0.57 ct.5.50 - 5.70 mm.4.00 - 4.20 mm.
0.60 - 0.68 ct.5.70 - 5.80 mm.4.00 - 4.30 mm.
0.70 - 0.74 ct.5.90 - 6.10 mm.4.20 - 4.50 mm.

0.74 - 5.25 cts

Copyright © NGD DIAMONDS
EMERALD CUT CARAT WEIGHTEMERALD CUT LENGTH MM SIZEEMERALD CUT WIDTH MM SIZE
0.74 - 0.78 ct.6.10 - 6.20 mm.4.40 - 4.50 mm.
0.80 - 0.88 ct.6.30 - 6.50 mm.4.40 - 4.70 mm.
0.90 - 0.98 ct.6.50 - 6.70 mm.4.60 - 4.90 mm.
1.00 - 1.15 ct. 6.80 - 7.00 mm.4.80 - 5.20 mm.
1.20 - 1.27 ct7.00 - 7.40 mm.5.10 - 5.3 mm.
1.30 - 1.45 ct7.20 - 7.60 mm.5.20 - 5.50 mm.
1.50 - 1.60 ct7.50 - 7.80 mm.5.40 - 5.60 mm.
1.65 - 1.80 ct7.70 - 8.20 mm.5.60 - 5.80 mm.
2.00 - 2.30 ct8.10 - 8.80 mm.6.00 - 6.40 mm.
2.40 - 2.60 ct8.80 - 9.40 mm.6.40 - 6.70 mm.
2.70 - 2.90 ct9.10 - 9.60 mm.6.60 - 6.80 mm.
3.00 - 3.30 ct9.40 - 10.00 mm.6.70 - 7.30 mm.
3.40 - 3.60 ct9.70 - 10.40 mm.7.20 - 7.40 mm.
3.70 -3.90 ct9.90 - 10.80 mm.7.30 - 7.50 mm.
4.00 - 4.20 ct10.30 - 10.80 mm.7.50 - 7.90 mm.
4.40 - 4.70 ct10.80 - 11.20 mm.7.90 - 8.10 mm.
5.00 - 5.25 ct11..20 - 11.80 mm.8.10 - 8.30 mm.
image-1

What is the Ideal Diamond Depth and Table for the Emerald Cut?

EXCELLENTVERY GOODGOOD

Table - %

61% - 69%

57% - 61%

or

68% - 72%

54% - 57%

or

73% - 74%

Depth - %

60% - 67%

58% - 61%

or

67% - 70%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Emerald Cut Diamond Length to Width Ratio?

EXCELLENTVERY GOODGOOD
Length To Width Ratio1.35 - 1.50

1.30 - 1.40

or

1.50 - 1.60

 

1.25 - 1.26

or

1.59 - 1.70

i-1

Professional Asscher Cut Diamond Size Chart

Asscher Shaped Diamond Size Comparison From CT to MM and Vice Versa

Asscher Cut Diamond CT to MM / MM to CT Conversion Chart

0.04 - 0.75 cts

Copyright © NGD DIAMONDS
ASSCHER CUT CARAT WEIGHTASSCHER CUT MM SIZE
0.04 - 0.05 ct.1.90 - 2.00 mm.
0.05 - 0.06 ct.2.10 - 2.20 mm.
0.07 - 0.08 ct.2.30 - 2.40 mm.
0.09 - 0,11 ct.2.50 - 2.60 mm.
0.12 - 0.13 ct.2.70 - 2.80 mm.
0.14 -0.17 ct.2.90 - 3.10 mm.
0.18 - 0.21 ct.3.20 - 3.30 mm.
0.22 - 0.24 ct.3.30 - 3.40 mm.
0.25 - 0.28 ct.3.50 - 3.70 mm.
0.30 - 0.35 ct.3.70 - 3.90 mm.
0.35 - 0.40 ct.3.90 - 4.00 mm.
0.40 - 0.45 ct.4.10 - 4.20 mm.
0.45 - 0.50 ct.4.30 - 4.40 mm.
0.55 - 0.60 ct.4.50 - 4.60 mm.
0.60 - 0.65 ct.4.70 - 4.80 mm.
0.70 - 0.75 ct.4.90 - 5.20 mm.

0.80 - 5.25 cts

Copyright © NGD DIAMONDS
ASSCHER CUT CARAT WEIGHTASSCHER CUT MM SIZE
0.80 - 0.89 ct.5.20 - 5.30 mm.
0.90 - 0.98 ct.5.30 - 5.40 mm.
1.00 - 1.15 ct 5.50 - 5.60 mm.
1.20 - 1.27 ct5.70 - 6.20 mm.
1.30 - 1.45 ct6.10 - 6.50 mm.
1.50 - 1.60 ct6.20 - 6.60 mm.
1.65 - 1.80 ct6.50 - 7.00 mm.
2.00 - 2.30 ct6.90 - 7.50 mm.
2.40 - 2.60 ct7.40 - 7.90 mm.
2.70 - 2.90 ct7.50 - 8.20 mm.
3.00 - 3.30 ct7.80 - 8.50 mm.
3.40 - 3.60 ct8.30 - 8.70 mm.
3.70 -3.90 ct8.50 - 8.90 mm.
4.00 - 4.20 ct8.70 - 9.20 mm.
4.40 - 4.70 ct9.10 - 9.70 mm.
5.00 - 5.25 ct9.20 - 10.00 mm.
image-1

What is the Ideal Diamond Depth and Table for the Asscher Cut?

EXCELLENTVERY GOODGOOD

Table - %

61% - 69%

57% - 60%

or

70% - 72%

54% - 56%

or

73% - 74%

Depth - %

61% - 67%

59% - 60.9%

or

67.1% - 70%

57% - 58.9%

or

70.1% - 74%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the recommended Length to Width Ratio of an Asscher Cut Diamond?

EXCELLENT VERY GOODGOOD
Length To Width Ratio1.00 to

1.03

1.04 - 1.05

i-1

Professional Square Radiant Cut Diamond Size Chart

Square Radiant Shaped Diamond Size Comparison Tool

Radiant Cut Diamond CT to MM / MM to CT Conversion Chart

0.04 - 0.77 cts

Copyright © NGD DIAMONDS
SQUARE RADIANT CUT CARAT WEIGHT SQUARE RADIANT CUT MM SIZE
0.04 - 0.05 ct.1.90 - 2.00 mm.
0.05 - 0.06 ct.2.10 - 2.20 mm.
0.07 - 0.08 ct.2.30 - 2.40 mm.
0.09 - 0.10 ct.2.50 - 2.60 mm.
0.10 - 0.12 ct.2.70 - 2.80 mm.
0.13 - 0.15 ct.2.90 - 3.00 mm.
0.16 - 0.18 ct.3.10 - 3.20 mm.
0.20 - 0.22 ct.3.20 - 3.40 mm.
0.23 - 0.26 ct.3.50 - 3.60 mm.
0.28 - 0.31 ct.3.70 - 3.80 mm.
0.32 - 0.35 ct.3.90 - 4.00 mm.
0.38 - 0.40 ct.4.10 - 4.20 mm.
0.43 - 0.47 ct.4.30 - 4.40 mm.
0.50 - 0.55 ct.4.50 - 4.60 mm.
0.55 - 0.58 ct.4.70 - 4.80 mm.
0.60 - 0.68 ct.4.90 - 5.00 mm.
0.70 - 0.77 ct.5.00 - 5.20 mm.

0.80 - 5.25 cts

Copyright © NGD DIAMONDS
SQUARE RADIANT CUT CARAT WEIGHT SQUARE RADIANT CUT MM SIZE
0.80 - 0.88 ct.5.10 - 5.30 mm.
0.90 - 0.98 ct.5.20 - 5.40 mm.
1.00 - 1.15 ct 5.50 - 5.60 mm.
1.20 - 1.27 ct5.70 - 6.20 mm.
1.30 - 1.45 ct6.10 - 6.50 mm.
1.50 - 1.60 ct6.20 - 6.60 mm.
1.65 - 1.80 ct6.50 - 7.00 mm.
2.00 - 2.30 ct6.90 - 7.50 mm.
2.40 - 2.60 ct7.40 - 7.90 mm.
2.70 - 2.90 ct7.50 - 8.20 mm.
3.00 - 3.30 ct7.80 - 8.50 mm.
3.40 - 3.60 ct8.30 - 8.70 mm.
3.70 -3.90 ct8.50 - 8.90 mm.
4.00 - 4.20 ct8.70 - 9.20 mm.
4.40 - 4.70 ct9.10 - 9.70 mm.
5.00 - 5.25 ct9.20 - 10.00 mm.
image-1

What is the Ideal Diamond Depth and Table for the Radiant Cut?

EXCELLENTVERY GOODGOOD

Table - %

61% - 69%

57% - 60%

or

70% - 72%

54% - 56%

or

73% - 74%

Depth - %

61% - 67%

59% - 60.9%

or

67.1% - 70%

57% - 58.9%

or

70.1% - 74%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Ideal Length to Width Ratio of a Radiant Cut Diamond?

EXCELLENT VERY GOODGOOD
Length To Width Ratio1.00 to

1.03

1.04 - 1.05

i-1

Professional Rectangular Radiant Cut Diamond Size Chart

Realistic Rectangular Radiant Shaped Diamond Size Comparison from CT TO MM / MM to CT

Rectangular Radiant Cut Diamond CT to MM / MM to CT

0.09 - 0.98 cts

Copyright © NGD DIAMONDS
RECTANGULAR RADIANT CUT CARAT WEIGHTRECTANGULAR RADIANT CUT LENGTH MM SIZERECTANGULAR RADIANT CUT WIDTH MM SIZE
0.09 - 0.11 ct.2.90 - 3.10 mm.2.30 - 2.40 mm.
0.11 - 0.13 ct.3.20 - 3.40 mm.2.40 - 2.50 mm.
0.13 - 0.15 ct.3.30 - 3.50 mm.2.40 - 2.60 mm.
0.14 - 0.16 ct.3.50 - 3.60 mm.2.60 - 2.80 mm.
0.18 - 0.20 ct.3.70 - 3.80 mm.2.90 - 3.10 mm.
0.19 - 0.22 ct.3.90 - 4.00 mm.2.90 - 3.10 mm.
0.23 - 0.24 ct.4.10 - 4.20 mm.3.10 - 3.20 mm.
0.25 - 0.28 ct.4.30 - 4.40 mm.3.20 - 3.30 mm.
0.30 - 0.36 ct.4.40 - 4.50 mm.3.30 - 3.50 mm.
0.38 - 0.44 ct.4.70 - 4.80 mm.3.40 - 3.80 mm.
0.43 - 0.48 ct.4.90 - 5.00 mm.3.60 - 3.90 mm.
0.49 - 0.52 ct.5.00 - 5.20 mm.4.00 - 4.20 mm.
0.52 - 0.55 ct.5.20 - 5.40 mm.4.00 - 4.20 mm.
0.60 - 0.67 ct.5.40 - 5.60 mm.4.30 - 4.50 mm.
0.70 - 0.75 ct.5.60 - 5.70 mm.4.50 - 4.60 mm.
0.80 - 0.89 ct.5.70 - 6.00 mm.4.50 - 4.60 mm.
0.90 - 0.98 ct.6.10 - 6.40 mm.4.70 - 4.90 mm.

Rectangular Radiant Cut Diamond CT to MM / MM to CT

1.00 - 5.25 cts

Copyright © NGD DIAMONDS
RECTANGULAR RADIANT CUT CARAT WEIGHT RECTANGULAR RADIANT CUT LENGTH MM SIZERECTANGULAR RADIANT CUT WIDTH MM SIZE
1.00 - 1.15 ct.6.50 - 6.80 mm.4.90 - 5.10 mm.
1.20 - 1.27 ct6.80 - 7.30 mm.5.40 - 5.70 mm.
1.30 - 1.45 ct7.00 - 7.40 mm.5.80 - 5.90 mm.
1.50 - 1.60 ct7.30 - 7.90 mm.5.80 - 6.20 mm.
1.65 - 1.80 ct7.50 - 8.10 mm.6.10 - 6.50 mm.
2.00 - 2.30 ct8.00 - 8.60 mm.6.40 - 6.80 mm.
2.40 - 2.60 ct8.50 - 9.00 mm.6.90 - 7.20 mm.
2.70 - 2.90 ct8.90 - 9.40 mm.7.10 - 7.30 mm.
3.00 - 3.30 ct9.20 - 9.80 mm.7.30 - 7.70 mm.
3.40 - 3.60 ct9.40 - 10.00 mm.7.60 - 7.90 mm.
3.70 -3.90 ct9.90 - 11.00 mm.8.00 - 8.40 mm.
4.00 - 4.20 ct10.00 - 11.00 mm.8.10 - 8.50 mm.
4.40 - 4.70 ct10.70 - 11.50 mm.8.40 - 8.70 mm.
5.00 - 5.25 ct11.00- 11.70 mm.8.70 - 9.10 mm.
image-1

What is the Ideal Diamond Depth and Table for the Rectangular Radiant Cut?

EXCELLENTVERY GOODGOOD

Table - %

61% - 69%

57% - 60%

or

70% - 72%

54% - 56%

or

73% - 74%

Depth - %

61% - 67%

59% - 59.9%

or

70.1% - 74%

54% - 56.9%

or

74.1% - 78%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

Recommended Length to Width Ratio of Rectangular Radiant Shaped Diamonds?

EXCELLENTVERY GOODGOOD
Length To Width Ratio1.20-1.30

1.15 - 1.25

or

1.29 - 1.35

 

1.10 - 1.15

or

1.36 - 1.40

 
i-1

Professional Heart Diamond Size Chart & Conversion Tool

MM to CT / CT to MM Heart Shaped Diamond Size Comparison

How to Accurately Measure a Heart Shaped Diamond

Heart Shaped Diamond CT to MM / MM to Carat Conversion Charts

0.18-5.20 cts (Excellent Cut)

Copyright © NGD DIAMONDS
HEART SHAPE CARAT WEIGHTHEART SHAPE MM SIZE (RATIO of 0.95 - 1.02) EXCELLENT CUT
0.18 - 0.21 ct. 3.50 - 3.70 mm.
0.23 - 0.26 ct. 3.80 - 4.10 mm.
0.27 - 0.29 ct. 4.20 - 4.40 mm.
0.30 - 0.38 ct. 4.50 - 4.70 mm.
0.40 - 0.45 ct.4.90 - 5.10 mm.
0.50 - 0.57 ct. 5.20 - 5.50 mm.
0.60 - 0.65 ct. 5.60 - 5.70 mm.
0.70 - 0.75 ct. 5.80 - 6.10 mm.
0.80 - 0.85 ct.6.10 - 6.30 mm.
0.90 - 0.95 ct.6.20 - 6.50 mm.
1.00 - 1.10 ct. 6.40 - 6.70 mm.
1.20 - 1.30 ct.7.00 - 7.40 mm.
1.50 - 1.60 ct.7.50 - 7.90 mm.
1.70 - 1.80 ct.8.00 - 8.20 mm.
2.00 - 2.20 ct. 8.30 - 8.60 mm.
2.40 - 2.60 ct.8.40 - 8.90 mm.
2.70 - 2.85 ct.8.80 - 9.30 mm.
3.00 - 3.20 ct. 9.30 - 9.80 mm.
3.40 - 3.60 ct. 9.50 - 9.90 mm.
4.00 - 4.20 ct. 9.80 - 10.00 mm.
4.40 - 4.60 ct.9.90 - 10.30mm.
5.00 - 5.20 ct. 10.50 - 11.10 mm.

0.17 - 2.20 cts (Good Cut)

Copyright © NGD DIAMONDS
HEART SHAPE CARAT WEIGHTHEART SHAPE MM SIZE (RATIO of 0.90 - 1.05) VERY GOOD CUT
0.17 - 0.21 ct. 3.30 - 3.70 mm.
0.23 - 0.26 ct. 3.60 - 3.90 mm.
0.27 - 0.29 ct. 4.00 - 4.30 mm.
0.30 - 0.38 ct. 4.20 - 4.60 mm.
0.40 - 0.45 ct.4.60 - 4.90 mm.
0.50 - 0.57 ct. 4.90 - 5.30 mm.
0.60 - 0.65 ct. 5.30 - 5.70 mm.
0.70 - 0.75 ct. 5.50 - 5.80 mm.
0.80 - 0.85 ct.5.80 - 6.00 mm.
0.90 - 0.95 ct.5.90 - 6.30 mm.
1.00 - 1.10 ct. 6.10 - 6.50 mm.
1.20 - 1.30 ct.6.60 - 7.00 mm.
1.50 - 1.60 ct.7.10 - 8.50 mm.
1.70 - 1.80 ct.5.00 - 5.30 mm.
2.00 - 2.20 ct. 7.90 - 8.20 mm.
2.40 - 2.60 ct.8.00 - 8.50 mm.
2.70 - 2.85 ct.8.40 - 9.00 mm
3.00 - 3.20 ct. 8.90 - 9.30 mm.
3.40 - 3.60 ct. 9.00 - 9.40 mm.
4.00 - 4.20 ct. 9.30 - 9.50 mm.
4.40 - 4.60 ct.9.40 - 9.80 mm.
5.00 - 5.20 ct. 9.80 - 10.80 mm.
image-1

Recommended Dpeth and Table for Heart Shapes

EXCELLENTVERY GOODGOOD

Table - %

53% - 63%

52%

or

64% - 65%

51%

or

66% - 68%

Depth - %

58% - 62%

56% - 57.9%

or

62.1% - 66%

53% - 55.9%

or

66.1% - 71%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the Recommended Length to Width Ratio in Heart Cut Diamonds?

EXCELLENT VERY GOODGOOD
Length To Width Ratio0.95 - 1.02

0.89 - 0.94

or

1.03 - 1.05

0.83 - 0.87

or

1.06 - 1.10

i-1

Professional Marquise Diamond Size Chart

CT to MM / MM to CT Marquise Shaped Diamond Size Comparison Chart

Marquise Cut Diamond CT to MM / MM CT Conversion Shart

0.04 - 1.10 cts

Copyright © NGD DIAMONDS
MARQUISE CUT CARAT WEIGHTMARQUISE CUT LENGTH MM SIZEMARQUISE CUT WIDTH MM SIZE
0.04 - 0.07 ct. 3.80 - 4.30 mm. 1.80 - 2.10 mm.
0.08 - 0.12 ct. 4.20 - 4.90 mm. 2.20 - 2.60 mm.
0.13 - 0.17 ct. 4.90 - 5.70 mm. 2.50 - 2.90 mm.
0.18 - 0.22 ct. 5.60 - 6.30 mm.2.90 - 3.30 mm.
0.23 - 0.28 ct.6.00 - 6.70 mm. 3.10 - 3.40 mm.
0.30 - 0.37 ct. 6.50 - 7.20 mm. 3.40 - 3.70 mm.
0.40 - 0.48 ct. 7.10 - 7.80 mm.3.70 - 4.20 mm.
0.50 - 0.59 ct. 7.50 - 8.50 mm. 4.00 - 4.30 mm.
0.60 - 0.67 ct.8.50 - 8.90 mm.4.20 - 4.50 mm.
0.70 - 0.78 ct. 8.80 - 9.30 mm.4.40 - 4.70 mm.
0.80 - 0.88 ct.9.30 - 9.80 mm.4.70 - 4.80 mm.
0.90 - 0.98 ct.9.30 - 10.00 mm.4.80 - 5.10 mm.
1.00 -1.10 ct.9.80 - 11.00 mm.5.00 - 5.30 mm.

1.20 - 5.25 cts

Copyright © NGD DIAMONDS
MARQUISE CUT CARAT WEIGHTMARQUISE CUT LENGTH MM SIZEMARQUISE CUT WIDTH MM SIZE
1.20 - 1.27 ct10.60 - 11.50 mm. 5.30 - 5.50 mm.
1.30 - 1.45 ct11.30 - 12.00 mm. 5.60 - 5.70 mm.
1.50 - 1.60 ct11.80 - 12.20 mm. 5.80 - 6.00 mm.
1.65 - 1.80 ct12.30 - 12.50 mm.6.00 - 6.20 mm.
2.00 - 2.30 ct12.60 - 13.50 mm. 6.30 - 6.50 mm.
2.40 - 2.60 ct13.60 - 14.40 mm. 6.60 - 7.00 mm.
2.70 - 2.90 ct14.40 - 14.80 mm.7.00 - 7.40 mm.
3.00 - 3.30 ct14.60 - 15.30 mm. 7.50 - 7.70 mm.
3.40 - 3.60 ct15.50 - 16.10 mm.7.70 - 7.90 mm.
3.70 -3.90 ct16.20 - 16.40 mm.8.00 - 8.20 mm.
4.00 - 4.20 ct16.40 - 16.80 mm.8.20 - 8.40 mm.
4.40 - 4.70 ct16.70 - 17.30 mm.8.30 - 8.50 mm.
5.00 - 5.25 ct17.40- 17.80 mm.8.60 - 9.20 mm.
image-1

What is the Ideal Diamond Depth and Table for the Marquise Cut?

EXCELLENTVERY GOODGOOD

Table - %

61% - 69%

57% - 60%

or

70% - 72%

54% - 56%

or

73% - 74%

Depth - %

61% - 67%

59% - 60.9%

or

67.1% - 70%

57% - 58.9%

or

70.1% - 74%

Girdle

Very Thin to - 

Slightly Thick

Very Thin

to

Thick

Culet

NoneVery SmallSmall

What is the recommended Length to Width Ratio of Marquise Cut Diamond?

EXCELLENTVERY GOODGOOD
Length To Width Ratio1.85 - 2.00

1.75 - 1.84 

or

2.01 - 2.15

1.65 - 1.74 

or

2.16 - 2.30

i-1

Professional Baguette Diamond Size Chart

Baguette Shaped Diamond Size Comparison of CT to MM / MM to CT

Tapered Baguette MM Width

MM Length

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

2.50

2.60

0.03

0.04

0.04

0.05

0.05

0.06

0.06

0.07

0,08

0.09

0.09

0.10

0.10

0.11

0.11

0.12

0.13

0.14

0.14

0.15

2.70

2.80

0.03

0.04

0.04

0.05

0.04

0.05

0.06

0.08

0,08

0.10

0.09

0.11

0.10

0.12

0.12

0.13

0.12

0.14

0.14

0.16

2.90

3.00

0.04

0.05

0.05

0.07

0.06

0.07

0.07

0.09

0.09

0.11

0.11

0.12

0.11

0.13

0.13

0.14

0.14

0.16

0.14

0.16

3.10

3.20

0.04

0.06

0.05

0.07

0.06

0.07

0.07

0.09

0.09

0.11

0.11

0.13

0.12

0.13

0.14

0.15

0.15

0.17

0.15

0.17

3.30

3.40

0.05

0.07

0.06

0.08

0.07

0.08

0.08

0.09

0.09

0.11

0.10

0.12

0.13

0.14

0.14

0.16

0.16

0.17

0.16

0.18

3.50

3.60

0.06

0.07

0.07

0.08

0.08

0.09

0.09

0.10

0.10

0.11

0.11

0.12

0.14

0.15

0.15

0.17

0.15

0.18

0.17

0.18

3.70

3.80

0.06

0.07

0.07

0.08

0.08

0.09

0.10

0.11

0.10

0.12

0.12

0.13

0.15

0.16

0.17

0.18

0.18

0.20

0.19

0.22

3.90

4.00

0.06

0.08

0.07

0.09

0.08

0.10

0.10

0.12

0.12

0.14

0.13

0.15

0.17

0.18

0.18

0.19

0.20

0.22

0.21

0.24

4.10

4.20

0.06

0.08

0.07

0.09

0.08

0.10

0.11

0.13

0.12

0.14

0.14

0.16

0.17

0.19

0.19

0.21

0.21

0.23

0.23

0.25

4.30

4.40

0.08

0.09

0.09

0.11

0.10

0.12

0.13

0.15

0.14

0.16

0.15

0.18

0.18

0.20

0.21

0.23

0.23

0.26

0.26

0.28

4.50

4.60

0.09

0.10

0.10

0.12

0.11

0.13

0.14

0.15

0.15

0.17

0.17

0.19

0.19

0.21

0.22

0.24

0.24

0.27

0.27

0.30

4.70

4.80

0.10

0.11

0.11

0.12

0.12

0.14

0.15

0.16

0.16

0.18

0.18

0.20

0.20

0.22

0.23

0.25

0.25

0.28

0.28

0.31

4.90

5.00

0.10

0.12

0.11

0.13

0.12

0.15

0.14

0.16

0.17

0.18

0.18

0.21

0.21

0.23

0.23

0.26

0.27

0.30

0.30

0.33

5.10

5.20

0.11

0.13

0.12

0.14

0.13

0.15

0.15

0.17

0.17

0.19

0.19

0.22

0.22

0.23

0.24

0.28

0.28

0.32

0.31

0.35

5.30

5.40

0.11

0.14

0.13

0.15

0.15

0.17

0.16

0.18

0.18

0.20

0.21

0.23

0.23

0.25

0.25

0.29

0.28

0.33

0.33

0.37

5.50

5.60

0.11

0.14

0.13

0.16

0.15

0.18

0.17

0.20

0.20

0.22

0.22

0.24

0.25

0.29

0.28

0.31

0.30

0.35

0.35

0.39

i-1

Professional Tapered Baguette Diamond Size Chart

Realistic CT to MM / MM to CT Tapered Baguette Size Comparison

Tapered Baguette MM Width

MM Length

1.20

1.30

1.40

1.50

1.60

1.70

1.80

1.90

2.00

2.10

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

2.50

2.60

0.02

0.03

0.03

0.04

0.04

0.05

0.05

0.06

0,07

0.07

0.07

0.08

0.08

0.09

0.09

0.10

0.11

0.11

0.11

0.12

2.70

2.80

0.02

0.03

0.03

0.04

0.04

0.05

0.05

0.07

0,07

0.08

0.08

0.09

0.08

0.10

0.10

0.11

0.10

0.11

0.11

0.13

2.90

3.00

0.03

0.04

0.04

0.06

0.05

0.06

0.06

0.07

0.07

0.09

0.09

0.10

0.09

0.11

0.11

0.11

0.11

0.13

0.11

0.13

3.10

3.20

0.03

0.05

0.04

0.06

0.05

0.06

0.06

0.07

0.07

0.09

0.09

0.11

0.10

0.11

0.11

0.12

0.12

0.14

0.12

0.14

3.30

3.40

0.04

0.06

0.05

0.07

0.06

0.07

0.07

0.07

0.07

0.09

0.08

0.10

0.11

0.11

0.11

0.13

0.13

0.14

0.13

0.15

3.50

3.60

0.05

0.06

0.06

0.07

0.07

0.07

0.07

0.08

0.08

0.09

0.09

0.10

0.11

0.12

0.12

0.14

0.12

0.15

0.14

0.15

3.70

3.80

0.05

0.06

0.06

0.07

0.07

0.07

0.08

0.09

0.08

0.10

0.10

0.11

0.12

0.13

0.14

0.15

0.15

0.16

0.16

0.18

3.90

4.00

0.05

0.07

0.06

0.07

0.07

0.08

0.08

0.10

0.10

0.11

0.11

0.12

0.14

0.15

0.15

0.16

0.16

0.18

0.17

0.20

4.10

4.20

0.05

0.07

0.06

0.07

0.07

0.08

0.09

0.11

0.10

0.11

0.11

0.13

0.14

0.16

0.16

0.17

0.17

0.19

0.19

0.21

4.30

4.40

0.07

0.07

0.07

0.09

0.08

0.10

0.11

0.12

0.11

0.13

0.12

0.15

0.15

0.16

0.17

0.19

0.19

0.21

0.21

0.23

4.50

4.60

0.07

0.08

0.08

0.10

0.09

0.11

0.11

0.12

0.12

0.14

0.14

0.16

0.16

0.17

0.18

0.20

0.20

0.22

0.22

0.25

4.70

4.80

0.08

0.09

0.09

0.10

0.10

0.11

0.12

0.13

0.13

0.15

0.15

0.16

0.16

0.18

0.19

0.21

0.21

0.23

0.23

0.25

4.90

5.00

0.08

0.10

0.09

0.11

0.10

0.12

0.11

0.13

0.14

0.15

0.15

0.17

0.17

0.19

0.19

0.21

0.22

0.25

0.25

0.27

5.10

5.20

0.09

0.11

0.10

0.11

0.11

0.12

0.12

0.14

0.14

0.16

0.16

0.18

0.18

0.19

0.20

0.23

0.23

0.26

0.25

0.29

5.30

5.40

0.09

0.11

0.11

0.12

0.12

0.14

0.13

0.15

0.15

0.16

0.17

0.19

0.19

0.21

0.21

0.24

0.23

0.27

0.27

0.30

5.50

5.60

0.09

0.11

0.11

0.13

0.12

0.15

0.14

0.16

0.16

0.18

0.18

0.20

0.21

0.24

0.23

0.25

0.25

0.29

0.29

0.32

i-1

Professional Carre Cut Diamond Size Chart

CT to MM and MM to Carat Carre Cut Size Comparison

Carre Cut Diamond Conversion Chart From CT to MM / MM to CT

0.05 - 1.05 cts

CARRE CUT CARAT WEIGHTCARRE CUT MM SIZE
0.05 - 0.06 ct.1.90 - 2.00 mm.
0.06 - 0.07 ct.2.10 - 2.20 mm.
0.08 - 0.09 ct.2.30 - 2.40 mm.
0.10 - 0.12 ct.2.50 - 2.60 mm.
0.13 - 0.14 ct.2.70 - 2.80 mm.
0.15 - 0.17 ct.2.90 - 3.00 mm.
0.18 - 0.21 ct.3.10 - 3.20 mm.
0,22 - 0.25 ct.3.30 - 3.40 mm.
0.25 - 0.29 ct.3.50 - 3.60 mm.
0,30 - 0.36 ct.3.70 - 3.80 mm.
0.37 - 0.42 ct.3.90 - 4.00 mm.
0.42 - 0.47 ct.4.10 - 4.20 mm.
0.47 - 0.53 ct.4.30 - 4.40 mm.
0.55 - 0.60 ct.4.50 - 4.60 mm.
0.60 - 0.65 ct.4.70 - 4.80 mm.
0.70 - 0.75 ct.4.90 - 5.00 mm.
0.80 - 0.85 ct.5.10 - 5.20 mm.
0.90 - 0.98 ct.5.30 - 5.40 mm.
1.00 - 1.05 ct.5.50 - 5.60 mm.
i-1

Professional Half Moon Cut Diamond Size Chart

MM to CT / CT TO MM Size Comparison Tool of Half Moon Shaped Diamonds

Half Moon Cut Diamond Conversion Charts From CT to MM / MM to CT

0.25 - 1.30 ctw

PAIR AVERAGE TOTAL WEIGHTHALF MOON LENGTH MM SIZEHALF MOON WIDTH MM SIZE
0.25 - 0.27 ct tw3.60 - 3 .80 mm.2.60 - 2.70 mm.
0.28 - 0.32 ct tw3.60 - 3 .80 mm.2.80 - 3.00 mm.
0.30 - 0.35 ct tw3.90 - 4.10 mm.2.70 - 2.80 mm.
0.36- 0.38 ct tw3.90 - 4.10 mm.2.90 - 3.10 mm.
0.30 - 0.33 ct tw4.20 - 4.10 mm.2.70 - 2.80 mm.
0.36 - 0.40 ct tw4.20- 4.30 mm.2.90 - 3.10 mm.
0.36 - 0.39 ct tw4.40 - 4.50 mm.2.70 - 2.80 mm.
0.42 - 0.45 ct tw4.40 - 4.50 mm.2.90 - 3.10 mm.
0.38 - 0.43 ct tw4.60 - 4.80 mm.2.70 - 2.80 mm.
0.43 - 0.46 ct tw4.60 - 4.80 mm.2.90 - 3.10 mm.
0.39 - 0.44 ct tw4.90 - 5.20 mm.2.70 - 2.80 mm.
0.46 - 0.50 ct tw4.90 - 5.20 mm.2.90 - 3.10 mm.
0.53 - 0.57 ct tw4.90 - 5.20 mm.3.20 - 3.30 mm.
0.56 - 0.61 ct tw5.40 - 5.60 mm.3.20 - 3.40 mm.
0.70 - 0.80 ct tw5.90 - 6.20 mm.3.40 - 3.70 mm.
0.90 - 1.00 ct tw5.90 - 6.20 mm.3.80 - 4.20 mm.
0.95 - 1.20 ct tw6.40 - 6.60 mm.4.00 - 4.30 mm.
1.10 - 1.30 ct tw6.80 - 7.20 mm.4.20 - 4.50 mm.
i-1

Professional Trapezoid Cut Diamond Size Chart

CT TO MM / MM to CT Size Comparison Tool for Trapezoid Diamonds

Trapezoid Brilliant Cut Diamond Pairs Conversion 0.28 - 1.30 ctw

Alternate Text
Pair Average Total Weight Top Horizontal Length MM Size - (L-1) Vertical Width MM Size - (W-1)Bottom Horizontal Length MM Size - (L-2)
0.28 - 0.32 ct tw3.60 - 3 .80 mm.2.60 - 2.70 mm.2.60 - 2.75 mm
0.31 - 0.35 ct tw3.60 - 3 .80 mm.2.80 - 3.00 mm.2.60 - 2.75 mm
0.31 - 0.34 ct tw3.90 - 4.10 mm.2.70 - 2.80 mm.2.90 - 3.00 mm
0.38- 0.44 ct tw3.90 - 4.10 mm.2.90 - 3.10 mm.2.90 - 3.00 mm
0.32 - 0.37 ct tw4.10 - 4.20 mm.2.70 - 2.80 mm.3.10 - 3.20 mm
0.40 - 0.44 ct tw4.20- 4.30 mm.2.90 - 3.10 mm.3.20 - 3.45 mm
0.38 - 0.44 ct tw4.40 - 4.50 mm.2.70 - 2.80 mm.3.30 - 3.50 mm
0.43 - 0.47 ct tw4.40 - 4.50 mm.2.90 - 3.10 mm.3.30 - 3.50 mm
0.40 - 0.44 ct tw4.60 - 4.80 mm.2.70 - 2.80 mm.3.60 - 3.90 mm
0.44 - 0.47 ct tw4.60 - 4.80 mm.2.90 - 3.10 mm.3.60 - 3.90 mm
0.40 - 0.45 ct tw4.90 - 5.20 mm.2.70 - 2.80 mm.3.90 - 4.10 mm
0.50 - 0.55 ct tw4.90 - 5.20 mm.2.90 - 3.10 mm.3.90 - 4.10 mm
0.58 - 0.64 ct tw4.90- 5.20 mm.3.20 - 3.30 mm.3.95 - 4.20 mm
0.55 - 0.64 ct tw5.40 - 5.60 mm.2.90 - 3.10 mm.4.30 - 4.50 mm
0.64 - 0.75 ct tw5.40 - 5.60 mm.3.20 - 3.40 mm.4.00 - 4.40 mm
0.58 - 0.75 ct tw5.90 - 6.20 mm.2.90 - 3.10 mm.4.70 - 5.00 mm
0.75 - 0.85 ct tw5.90 - 6.20 mm.3.30 - 3.50 mm.4.90 - 5.10 mm
0.80 - 1.00 ct tw5.90 - 6.20 mm.3.60 - 4.00 mm.4.50 - 4.80 mm
0.85 - 1.10 ct tw6.40 - 6.60 mm.3.80 - 4.20 mm.4.80 - 5.20 mm.
0.97 - 1.20 ct tw6.40 - 6.60 mm.4.00 - 4.30 mm.4.80 - 5.20 mm.
1.10 - 1.30 ct tw6.80 - 7.20 mm.4.00 - 4.30 mm.5.00 - 5.50 mm.

Trapezoid Brilliant Cut Diamond Pairs Conversion Chart 0.22 - 2.60 ctw With Sharper Angled Corners of 60 °

Alternate Text
Pair Average Total Weight Top Horizontal Length MM Size - (L-1) Vertical Width MM Size - (W-1)Bottom Horizontal Length MM Size - (L-2)
0.22 - 0.26 ct tw3.70 - 4.00 mm.2.50 - 2.70 mm.1.70 - 1.80 mm
0.26 - 0.30 ct tw4.00 - 4.50 mm.2.70 - 3.00 mm.1.85 - 2.00 mm
0.30 - 0.34 ct tw4.20 - 4.60 mm.2.85 - 3.15 mm.1.90 - 2.10 mm
0.36 - 0.38 ct tw4.40 - 4.70 mm.3.00 - 3.20 mm.2.00 - 2.15 mm
0.38 - 0.42 ct tw4.70 - 4.90 mm.3.15 - 3.30 mm.2.15 - 2.25 mm
0.42 - 0.46 ct tw4.90 - 5.20 mm.3.30 - 3.50 mm.2.25 - 2.40 mm
0.48 - 0.50 ct tw5.20 - 5.50 mm.3.50 - 3.75 mm.2.40 - 2.50 mm
0.52 - 0.58 ct tw5.50 - 5.70 mm.3.75 - 3.85 mm.2.50 - 2.60 mm
0.62 - 0.66 ct tw5.60 -5.90 mm.3.80 - 4.00 mm.2.60 - 2.70 mm
0.70 - 0.76 ct tw5.90 - 6.30 mm.4.00 - 4.25 mm.2.70 - 2.90 mm
0.78 - 0.80 ct tw6.20 - 6.50 mm.4.10 - 4.30 mm.2.85- 3.00 mm
0.84 - 0.92 ct tw6.40 - 6.70 mm.4.15 - 4.40 mm.2.95 - 3.10 mm
0.96 - 1.02 ct tw6.60 - 6.80 mm.4.15 - 4.40 mm.3.00 - 3.15 mm
1.06 - 1.14 ct tw6.80 - 7.30 mm.4.25- 4.60 mm.3.15 - 3.35 mm
1.24 - 1.38 ct tw7.20 - 7.50 mm.4.55 - 4.75 mm.3.30 - 3.45 mm.
1.40 - 1.54 ct tw7.40 - 7.70 mm.4.70 - 4.85 mm.3.40 - 3.55 mm.
1.58 - 1.72 ct tw7.60 - 8.10 mm.4.75 - 5.10mm.3.50 - 3.70 mm.
1.76 - 2.00 ct tw8.00 - 8.70 mm.5.00 - 5.50 mm.3.70 - 4.00 mm.
2.10 - 2.60 ct tw8.40 - 9.40 mm5.25 - 5.80 mm.3.90 - 4.30 mm.

Trapezoid Step Cut Diamond Pairs Conversion Chart 0.29 - 1.40 ctw

Alternate Text
Pair Average Total Weight Top Horizontal Length MM Size - (L-1) Vertical Width MM Size - (W-1)Bottom Horizontal Length MM Size - (L-2)
0.29 - 0.33 ct tw3.60 - 3 .80 mm.2.60 - 2.70 mm.2.60 - 2.75 mm
0.32- 0.36 ct tw3.60 - 3 .80 mm.2.80 - 3.00 mm.2.60 - 2.75 mm
0.32 - 0.35 ct tw3.90 - 4.10 mm.2.70 - 2.80 mm.2.90 - 3.00 mm
0.39- 0.45 ct tw3.90 - 4.10 mm.2.90 - 3.10 mm.2.90 - 3.00 mm
0.33 - 0.38 ct tw4.10 - 4.20 mm.2.70 - 2.80 mm.3.10 - 3.20 mm
0.41- 0.46 ct tw4.20- 4.30 mm.2.90 - 3.10 mm.3.20 - 3.45 mm
0.39 - 0.45 ct tw4.40 - 4.50 mm.2.70 - 2.80 mm.3.30 - 3.50 mm
0.44 - 0.48 ct tw4.40 - 4.50 mm.2.90 - 3.10 mm.3.30 - 3.50 mm
0.41 - 0.45 ct tw4.60 - 4.80 mm.2.70 - 2.80 mm.3.60 - 3.90 mm
0.45 - 0.49 ct tw4.60 - 4.80 mm.2.90 - 3.10 mm.3.60 - 3.90 mm
0.41 - 0.47 ct tw4.90 - 5.20 mm.2.70 - 2.80 mm.3.90 - 4.10 mm
0.51 - 0.57 ct tw4.90 - 5.20 mm.2.90 - 3.10 mm.3.90 - 4.10 mm
0.59 - 0.66 ct tw4.90- 5.20 mm.3.20 - 3.30 mm.3.95 - 4.20 mm
0.57 - 0.67 ct tw5.40 - 5.60 mm.2.90 - 3.10 mm.4.30 - 4.50 mm
0.66 - 0.77 ct tw5.40 - 5.60 mm.3.20 - 3.40 mm.4.00 - 4.40 mm
0.60 - 0.78 ct tw5.90 - 6.20 mm.2.90 - 3.10 mm.4.70 - 5.00 mm
0.77 - 0.88 ct tw5.90 - 6.20 mm.3.30 - 3.50 mm.4.90 - 5.10 mm
0.80 - 1.10 ct tw5.90 - 6.20 mm.3.60 - 4.00 mm.4.50 - 4.80 mm
0.90 - 1.15 ct tw6.40 - 6.60 mm.3.80 - 4.20 mm.4.80 - 5.20 mm.
1.00 - 1.25 ct tw6.40 - 6.60 mm.4.00 - 4.30 mm.4.80 - 5.20 mm.
1.15 - 1.40 ct tw6.80 - 7.20 mm.4.00 - 4.30 mm.5.00 - 5.50 mm.

Trapezoid Step Cut Diamond Pairs Conversion Chart 0.22 - 2.60 ctw

Alternate Text
Pair Average Total Weight Top Horizontal Length MM Size - (L-1) Vertical Width MM Size - (W-1)Bottom Horizontal Length MM Size - (L-2)
0.22 - 0.26 ct tw3.70 - 4.00 mm.2.50 - 2.70 mm.1.70 - 1.80 mm
0.26 - 0.30 ct tw4.00 - 4.50 mm.2.70 - 3.00 mm.1.85 - 2.00 mm
0.30 - 0.34 ct tw4.20 - 4.60 mm.2.85 - 3.15 mm.1.90 - 2.10 mm
0.36 - 0.38 ct tw4.40 - 4.70 mm.3.00 - 3.20 mm.2.00 - 2.15 mm
0.38 - 0.42 ct tw4.70 - 4.90 mm.3.15 - 3.30 mm.2.15 - 2.25 mm
0.42 - 0.46 ct tw4.90 - 5.20 mm.3.30 - 3.50 mm.2.25 - 2.40 mm
0.48 - 0.50 ct tw5.20 - 5.50 mm.3.50 - 3.75 mm.2.40 - 2.50 mm
0.52 - 0.58 ct tw5.50 - 5.70 mm.3.75 - 3.85 mm.2.50 - 2.60 mm
0.62 - 0.66 ct tw5.60 -5.90 mm.3.80 - 4.00 mm.2.60 - 2.70 mm
0.70 - 0.76 ct tw5.90 - 6.30 mm.4.00 - 4.25 mm.2.70 - 2.90 mm
0.78 - 0.80 ct tw6.20 - 6.50 mm.4.10 - 4.30 mm.2.85- 3.00 mm
0.84 - 0.92 ct tw6.40 - 6.70 mm.4.15 - 4.40 mm.2.95 - 3.10 mm
0.96 - 1.02 ct tw6.60 - 6.80 mm.4.15 - 4.40 mm.3.00 - 3.15 mm
1.06 - 1.14 ct tw6.80 - 7.30 mm.4.25- 4.60 mm.3.15 - 3.35 mm
1.24 - 1.38 ct tw7.20 - 7.50 mm.4.55 - 4.75 mm.3.30 - 3.45 mm.
1.40 - 1.54 ct tw7.40 - 7.70 mm.4.70 - 4.85 mm.3.40 - 3.55 mm.
1.58 - 1.72 ct tw7.60 - 8.10 mm.4.75 - 5.10mm.3.50 - 3.70 mm.
1.76 - 2.00 ct tw8.00 - 8.70 mm.5.00 - 5.50 mm.3.70 - 4.00 mm.
2.10 - 2.60 ct tw8.40 - 9.40 mm5.25 - 5.80 mm.3.90 - 4.30 mm.
i-1

Straight Bullet Cut Diamond Size Chart

Size Comparison Tool for Straight Bullet Shaped Diamonds

Straight Bullet MM Width

MM Length

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

3.90

4.00

0.15

0.16

0.16

0.17

0.18

0.19

0.18

0.21

4.10

4.20

0.15

0.17

0.17

0.18

0.18

0.20

0.20

0.22

4.30

4.40

0.16

0.18

0.18

0.20

0.20

0.23

0.23

0.25

4.50

4.60

0.17

0.18

0.19

0.21

0.21

0.24

0.24

0.26

4.70

4.80

0.18

0.19

0.20

0.22

0.22

0.25

0.25

0.27

4.90

5.00

0.18

0.20

0.20

0.23

0.24

0.26

0.26

0.29

5.10

5.20

0.19

0.20

0.21

0.25

0.25

0.28

0.27

0.31

5.30

5.40

0.20

0.22

0.22

0.26

0.25

0.29

0.29

0.33

5.50

5.60

0.22

0.26

0.25

0.27

0.26

0.31

0.31

0.34

i-1

Professional Tapered Bullet Cut Diamond Size Chart

Size Comparison Tool of Tapered Bullet Shaped Diamonds From CT to MM / MM to CT

Tapered Bullet MM Width

MM Length

2.40

2.50

2.60

2.70

2.80

2.90

3.00

3.10

3.90

4.00

0.12

0.13

0.13

0.13

0.14

0.15

0.15

0.17

4.10

4.20

0.12

0.13

0.13

0.15

0.15

0.16

0.16

0.18

4.30

4.40

0.13

0.14

0.15

0.16

0.16

0.18

0.18

0.20

4.50

4.60

0.13

0.15

0.15

0.17

0.17

0.19

0.19

0.21

4.70

4.80

0.14

0.15

0.16

0.18

0.18

0.20

0.20

0.22

4.90

5.00

0.15

0.16

0.16

0.18

0.19

0.21

0.21

0.23

5.10

5.20

0.15

0.16

0.17

0.20

0.20

0.22

0.22

0.25

5.30

5.40

0.20

0.22

0.18

0.20

0.20

0.23

0.23

0.26

5.50

5.60

0.18

0.20

0.20

0.22

0.21

0.25

0.25

0.27

i-1

Professional Shield Cut Diamond Size Chart

Size Comparison Tool for Shieldt Shaped Diamonds From CT to MM / MM to CT

Shield Cut Diamond Conversion Chart 0.13 - 1.45 ctw

PAIR AVERAGE TOTALE WEIGHTLENGTH MM SIZEWIDTH MM SIZE
0.13 - 0.17 ct tw3.60 - 4.10 mm.3.20 - 2.90 mm.
0.18 - 0.22 ct tw4.20 - 4 .40 mm.3.60 - 4.00 mm.
0.23 - 0.27 ct tw4.30 - 5.10 mm.3.90 - 4.80 mm.
0.28 - 0.37 ct tw4.80 - 5.60 mm.4.20 - 5.00 mm.
0.38 - 0.47 ct tw5.20 - 5.80 mm.4.80 - 5.30 mm.
0.48 - 0.59 ct tw5.40- 6.00 mm.5.00 - 5.80 mm.
0.60 - 0.68 ct tw5.80 - 6.30 mm.5.40- 6.00 mm.
0.70- 0.78 ct tw6.20- 6.80 mm.6.10 - 6.80 mm.
0.80 - 0.89 ct tw6.70 - 7.40 mm.6.50 - 7.20 mm.
0.90 - 0.98 ct tw7.20 - 7.80 mm.6.30 - 7.30 mm.
1.00 - 1.10 ct tw7.60 - 8.50 mm.6.70 - 7.60 mm.
1.18 - 1.45 ct tw8.00 - 8.90 mm.7.20 - 8.10 mm.
i-1

Professional Trilliant Cut Diamond Size Chart

MM to CT / CT to MM Trilliant Shaped DIamond Size Comparison Tool

Trilliant Cut Diamond CT to MM / MM to CT Size Chart

Trillion Base to Point From CT to MM

0.04 - 0.69 cts

Copyright © NGD DIAMONDS
CARAT WEIGHTBASE TO POINT MM SIZE
0.03 - 0.04 ct.2.20 - 2.40 mm.
0.05 - 0.06 ct.2.50 - 2.80 mm.
0.07 - 0.08 ct.3.00 - 3.20 mm.
0.08 - 0.11 ct.3.10 - 3.30 mm.
0.13 - 0,15 ct.3.30 - 3.60 mm.
0.15 - 0.17 ct.3.60 - 4.10 mm.
0.17 - 0.19 ct.3.80 - 4.20 mm.
0.20 - 0.21 ct.4.00 - 4.30 mm.
0.22 - 0.24 ct.4.20 - 4.40 mm.
0.24 - 0.26 ct.4.40 - 4.70 mm.
0.27 - 0.28 ct.4.70 - 5.00 mm.
0.30 - 0.33 ct.5.00 - 5.10 mm.
0.35 - 0.38 ct.5.10 - 5.30 mm.
0.40 - 0.43 ct.5.30 - 5.70 mm.
0.44 - 0.46 ct.5.60 - 5.90 mm.
0.48 - 0.52 ct.5.70 - 6.00 mm.
0.55 - 0.58 ct.5.90 - 6.20 mm.
0.60 - 0.65 ct.6.10 - 6.60 mm.
0.70 - 0.78 ct.6.50 - 6.80 mm.
0.80 - 0.87 ct.6.70 - 6.90 mm.
0.90 - 0.98 ct.6.80 - 7.30 mm.
1.00 - 1.15 ct.7.20 - 7.80 mm
1.18 - 1.45 ct7.50 - 8.30 mm
Trillion Base to Point From CT to MM

0.70 - 5.25 cts

Copyright © NGD DIAMONDS
CARAT WEIGHT POINT TO POINT MM SIZE
0.03 - 0.04 ct.2.40 - 2.60 mm.
0.05 - 0.06 ct.2.80 - 3.10 mm.
0.07 - 0.08 ct.3.20 - 3.50 mm.
0.08 - 0.11 ct.3.40 - 3.70 mm.
0.13 - 0,15 ct.3.70 - 4.00 mm.
0.15 - 0.17 ct.4.00 - 4.50 mm.
0.17 - 0.19 ct.4.20 - 4.60 mm.
0.20 - 0.21 ct.4.40 - 4.70 mm.
0.22 - 0.24 ct.4.70 - 4.90 mm.
0.24 - 0.26 ct.4.90 - 5.20 mm.
0.27 - 0.28 ct.5.20 - 5.50 mm.
0.30 - 0.33 ct.5.50 - 5.70 mm.
0.35 - 0.38 ct.5.60 -5.90 mm.
0.40 - 0.43 ct.5.90 - 6.30 mm.
0.44 - 0.46 ct.6.20 - 6.50 mm.
0.48 - 0.52 ct.6.40 - 6.70 mm.
0.55 - 0.58 ct.6.60 - 6.80 mm.
0.60 - 0.65 ct.6.80 - 7.30 mm.
0.70 - 0.78 ct.7.20 - 7.50 mm.
0.80 - 0.87 ct.7.40 - 7.70 mm.
0.90 - 0.98 ct.7.60 - 8.10 mm.
1.00 - 1.15 ct.8.00 - 8.70 mm.
1.18 - 1.45 ct8.40 - 9.40 mm
Calf Shape Diamond

Professional Size Conversion Chart for Calf Cut Diamonds

Calf Cut Diamond Conversion Chart - CT to MM / MM to CT

Cushion Cut MM to Carat Diamond Conversion Charts

0.12 – 1.38 cts​

CARAT WEIGHTTOP HORIZONTAL LENGTH MM SIZEVERTICAL WIDTH MM SIZE
0.12 - 0,14 ct.3.50 - 3.80 mm.3.20 - 3.40 mm.
0.14 - 0.16 ct.3.80 - 4.30 mm.3.40 - 3.80 mm.
0.16 - 0.18 ct.4.00 - 4.40 mm.3.60 - 3.90 mm.
0.19 - 0.20 ct.4.20 - 4.50 mm.3.70 - 4.00 mm.
0.21 - 0.23 ct.4.40 - 4.70 mm.4.00 - 4.20 mm.
0.23 - 0.25 ct.4.60 - 5.00 mm.4.20 - 4.40 mm.
0.26 - 0.27 ct.5.00 - 5.20 mm.4.40 - 4.70 mm.
0.29 - 0.31 ct.5.20 - 5.40 mm.4.70 - 4.90 mm.
0.33 - 0.36 ct.5.30 -5.60 mm.4.80 -5.00 mm.
0.38 - 0.41 ct.5.60 - 6.00 mm.5.00 - 5.40 mm
0.42 - 0.44 ct.5.90 - 6.20 mm.5.30 - 5.50 mm.
0.46 - 0.49 ct.6.10 - 6.30 mm.5.50 - 5.70 mm.
0.52 - 0.55 ct.6.30 - 6.40 mm.5.70 - 5.80 mm.
0.57 - 0.62 ct.6.40 - 6.90 mm.6.40 - 6.90 mm.
0.67 - 0.74 ct.6.90 - 7.10 mm.6.80 - 7.10 mm.
0.76 - 0.83 ct.7.00 - 7.30 mm.7.00 - 7.30 mm.
0.86 - 0.93 ct.7.20 - 7.70 mm.7.20 - 7.70 mm.
0.95 - 1.09 ct.7.60 - 8.20 mm.7.60 - 8.25 mm.
1.12 - 1.38 ct8.00 - 8.90 mm8.00 - 8.90 mm
i-1

Professional Size Conversion Chart for Calf Cut Diamonds

Calf Cut Diamond Conversion Chart - CT to MM / MM to CT

0.12 – 1.38 cts​​

Copyright © NGD DIAMONDS
CARAT WEIGHTTOP HORIZONTAL LENGTH MM SIZEVERTICAL WIDTH MM SIZE
0.12 - 0,14 ct.3.50 - 3.80 mm.3.20 - 3.40 mm.
0.14 - 0.16 ct.3.80 - 4.30 mm.3.40 - 3.80 mm.
0.16 - 0.18 ct.4.00 - 4.40 mm.3.60 - 3.90 mm.
0.19 - 0.20 ct.4.20 - 4.50 mm.3.70 - 4.00 mm.
0.21 - 0.23 ct.4.40 - 4.70 mm.4.00 - 4.20 mm.
0.23 - 0.25 ct.4.60 - 5.00 mm.4.20 - 4.40 mm.
0.26 - 0.27 ct.5.00 - 5.20 mm.4.40 - 4.70 mm.
0.29 - 0.31 ct.5.20 - 5.40 mm.4.70 - 4.90 mm.
0.33 - 0.36 ct.5.30 -5.60 mm.4.80 -5.00 mm.
0.38 - 0.41 ct.5.60 - 6.00 mm.5.00 - 5.40 mm
0.42 - 0.44 ct.5.90 - 6.20 mm.5.30 - 5.50 mm.
0.46 - 0.49 ct.6.10 - 6.30 mm.5.50 - 5.70 mm.
0.52 - 0.55 ct.6.30 - 6.40 mm.5.70 - 5.80 mm.
0.57 - 0.62 ct.6.40 - 6.90 mm.6.40 - 6.90 mm.
0.67 - 0.74 ct.6.90 - 7.10 mm.6.80 - 7.10 mm.
0.76 - 0.83 ct.7.00 - 7.30 mm.7.00 - 7.30 mm.
0.86 - 0.93 ct.7.20 - 7.70 mm.7.20 - 7.70 mm.
0.95 - 1.09 ct.7.60 - 8.20 mm.7.60 - 8.25 mm.
1.12 - 1.38 ct8.00 - 8.90 mm8.00 - 8.90 mm