Moissanite vs Diamond mm to ct Conversion Chart

Round Brilliant Cut 8 Hearts 8 Arrows - 58 Facets 

Moissanite Size (mm)	Diamond Equivalent Weight (DEW in ct)
3.0	0.11
3.5	0.17
4.0	0.25
4.5	0.36
5.0	0.50
5.5	0.66
5.75	0.75
6.0	0.84
6.5	1.00
6.8	1.25
7.0	1.30
7.5	1.67
8.0	2.00
8.5	2.43
9.0	3.00
9.5	3.35
10.0	4.00
10.5	4.20
11.0	5.00
12.0	6.00
14.0	10.00

Radiant Cut

Moissanite Size (mm)	Diamond Equivalent Weight (DEW in ct)
2 x 4	0.1
3 x 5	0.3
4 x 6	0.7
5 x 7	1.00
6 x 8	2.0
7.5 x 9.5	3.0
5.75	0.75
6.0	0.84
6.5	1.00
9 x 11	5.0
7.0	1.30
7.5	1.67
8.0	2.00
8.5	2.43
9.0	3.00
9.5	3.35
10.0	4.00
10.5	4.20
11.0	5.00
12.0	6.00
14.0	10.00

Cushion Cut

Moissanite Size (mm)	Diamond Equivalent Weight (DEW in ct)
3.0	0.11
3.5	0.17
4.0	0.25
4.5	0.36
5.0	0.50
5.5	0.66
5.75	0.75
6.0	1.00
6.5	1.00
6.8	1.25
7.0	1.30
7.5	1.67
8.0	3.00
8.5	2.43
9.0	3.00
9.5	3.35
10.0	4.00
10.5	4.20
11.0	5.00
12.0	6.00
14.0	10.00