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Diamond MM to CT conversion charts

Wondering what a 1 carat round or pear shaped diamond looks like on your finger?

Our diamond size chart will help you convert millimeter (mm) size to carat size for several types of diamonds shapes.

Round MM SizeCarat Weight
1.50.015
1.750.03
20.06
Princess MM SizeCarat Weight
1.50.015
1.750.03
20.06
Cushion MM SizeCarat Weight
1.50.015
1.750.03
20.06
Emerald MM SizeCarat Weight
1.50.015
1.750.03
20.06
Pear MM SizeCarat Weight
1.50.015
1.750.03
20.06
Oval MM SizeCarat Weight
1.50.015
1.750.03
20.06
Radiant MM SizeCarat Weight
1.50.015
1.750.03
20.06
Assher MM SizeCarat Weight
1.50.015
1.750.03
20.06
Marquise MM SizeCarat Weight
1.50.015
1.750.03
20.06