Round Cut Diamond Size Chart (MM)

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Round Cut Diamond Sizes

Round MM Size	Round Carat Weight
0.8 mm.	0.0025 ct.
1 mm.	0.005 ct.
1.1 mm.	0.0067 ct.
1.2 mm.	0.009 ct.
1.25 mm.	0.01 ct.
1.3 mm.	0.01 ct.
1.5 mm.	0.015 ct.
1.75 mm.	0.02 ct.
1.8 mm.	0.025 ct.
2 mm.	0.03 ct.
2.2 mm.	0.04 ct.
2.5 mm.	0.06 ct.
2.75 mm.	0.08 ct.
3 mm.	0.10 ct.
3.25 mm.	0.14 ct.
3.5 mm.	0.17 ct.
3.75 mm.	0.21 ct.
4 mm.	0.25 ct.
4.25 mm.	0.28 ct.
4.5 mm.	0.36 ct.
4.75 mm.	0.44 ct.
5.0 mm.	0.50 ct.
5.25 mm.	0.56 ct.
5.5 mm.	0.66 ct.
5.75 mm.	0.75 ct.
6 mm.	0.84 ct.
6.25 mm.	0.93 ct.
6.5 mm.	1.00 ct.
6.8 mm.	1.25 ct.

Round MM Size	Round Carat Weight
7 mm.	1.30 ct.
7.3 mm.	1.50 ct.
7.5 mm.	1.67 ct.
7.75 mm.	1.75 ct.
8 mm.	2.00 ct.
8.25 mm.	2.11 ct.
8.5 mm.	2.43 ct.
8.7 mm.	2.50 ct.
9 mm.	2.75 ct.
9.1 mm.	3.00 ct.
9.5 mm.	3.35 ct.
9.75 mm.	3.61 ct.
10 mm.	3.87 ct.
10.25 mm.	4.16 ct.
10.5 mm.	4.41 ct.
10.75 mm.	4.57 ct.
11 mm.	4.91 ct.
11.25 mm.	5.49 ct.
11.5 mm.	5.85 ct.
12 mm.	6.84 ct.
12.25 mm.	7.26 ct.
12.5 mm.	7.36 ct.
12.75 mm.	7.52 ct.
13 mm.	8.51 ct.
13.5 mm.	9.53 ct.
14 mm.	10.49 ct.
15 mm.	12.89 ct.
16 mm.	16.06 ct.

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