Black Diamonds vs White Diamonds

If you know your ring size but you have a different number than the size we use in Belgium (ISO 8653:2016 which defiWondering what a 1 carat round diamond looks link on a hand? Our round diamond size chart will help you convert millimeter (mm) size to carat size for round cut diamonds.nes the number in terms of internal circumfrence) use the table below to convert your size. We also recommend cross referencing your ring size by measuring the ring internal diameter and/or internal circumference.

Round Diamond Sizes

Black Diamonds vs White Diamonds

Round Diamonds MM. Size	White Diamonds Ct. Weight	Black Diamond Ct. Weight
0.8 mm.	0.00	0.00
1.00 mm.	0.01	0.01
1.1 mm.	0.01	0.01
1.2 mm.	0.01	0.01
1.25 mm.	0.01	0.01
1.3 mm.	0.01	0.01
1.5 mm.	0.02	0.02
1.75 mm.	0.02	0.02
1.8 mm.	0.03	0.03
2.00 mm.	0.03	0.04
2.2 mm.	0.04	0.05
2.5 mm.	0.06	0.07
2.75 mm.	0.08	0.10
3.00 mm.	0.10	0.12
3.25 mm.	0.14	0.17
3.5 mm.	0.17	0.20
3.75 mm.	0.21	0.25
4.00 mm.	0.25	0.33
4.25 mm.	0.28	0.36
4.5 mm.	0.36	0.47
4.75 mm.	0.44	0.57
5.00 mm.	0.50	0.65
5.25 mm.	0.56	0.73
5.5 mm.	0.66	0.89
5.75 mm.	0.75	1.01
6.00 mm.	0.84	1.20
6.25 mm.	0.93	1.30
6.5 mm.	1.00	1.40
6.8 mm.	1.25	1.80
7.00 mm.	1.30	1.90
7.3 mm.	1.50	2.10
7.5 mm.	1.67	2.40
7.75 mm.	1.75	2.50
8.00 mm.	2.00	2.80
8.25 mm.	2.11	3.00
8.5 mm.	2.43	3.50
8.7 mm.	2.50	3.50
9.00 mm.	2.75	3.90
9.1 mm.	3.00	4.20
9.5 mm.	3.35	4.70
9.75 mm.	3.61	5.10
10.00 mm.	3.87	5.50
10.25 mm.	4.16	5.50
10.5 mm.	4.41	5.80
10.75 mm.	4.57	6.00
11.00 mm.	4.91	6.40
11.25 mm.	5.49	7.20
11.5 mm.	5.85	7.70
12.00 mm.	6.84	8.90
12.25 mm.	7.26	9.50
12.5 mm.	7.36	9.60
12.75 mm.	7.52	9.80
13.00 mm.	8.51	11.10
13.5 mm.	9.53	12.40
14.00 mm.	10.49	13.70
15.00 mm.	12.89	16.80
16.00 mm.	16.06	20.90

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