Carat to MM

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Brilliant Cut

Round MM Size	Round Carat Weight
4 mm.	0.25 ct.
5.0 mm.	0.50 ct.
5.75 mm.	0.75 ct.
6.5 mm.	1.00 ct.
6.8 mm.	1.25 ct.
7.3 mm.	1.50 ct.
7.75 mm.	1.75 ct.
8 mm.	2.00 ct.
8.7 mm.	2.50 ct.
9.1 mm.	3.00 ct.
9.75 mm.	3.50 ct.
10.25 mm.	4.00 ct.
10.75 mm.	4.50 ct.
11 mm.	5.00 ct.