Heart Cut Diamond Size Chart (MM)

Wondering what a 1 carat Heart diamond looks link on a hand? Our Heart diamond size chart will help you convert millimeter (mm) size to carat size for Heart cut diamonds.

Heart Diamond Sizes

Heart MM Size	Heart Weight (ct)	Black Diamond ct weight (Approx)
3.5 mm.	0.18	0.22
4 mm.	0.25	0.30
4.25 mm.	0.28	0.34
4.5 mm.	0.34	0.41
4.75 mm.	0.38	0.46
5 mm.	0.50	0.65
5.5 mm.	0.61	0.79
6 mm.	0.75	1.00
6.25 mm.	0.83	1.10
6.5 mm.	1.00	1.40
7 mm.	1.25	1.80
7.5 mm.	1.50	2.10

8 mm.	2.00	2.80
8.5 mm.	2.50	3.50
9 mm.	3.00	4.20
10 mm.	3.50	4.90
11 mm.	4.41	6.20
12 mm.	5.66	8.00
13 mm.	7.88	11.10
14 mm.	9.38	13.20
15 mm.	10.79	15.20
16 mm.	13.27	18.60
18 mm.	15.33	21.50