Diamond Size Chart

Diamond is one of the best known precious Jem stones used by people. Here is the reference chart for round cut diamond shape. Diamond size is referred here in mm. For the defined size in mm, equivalent caret value is provided in the table. Use this table as a reference to compare the diamond shape and their relative carat value.

Diamond Carat Size Chart Conversion

Diamonds Diamonds
Round
 Cut
Decimal
Inch
Carat
Value
Round
 Cut
Decimal
Inch
Carat
Value
mm
Width
Decimal Width Weight mm
Width
Decimal Width Weight
1.0 mm .039 inch .005 carat 4.8 mm .40 carat
1.2 mm .008 carat 4.9 mm .43 carat
1.3 mm .01 carat 5.0 mm .197 inch .47 carat
1.5 mm .015 carat 5.2 mm .205 inch 1/2 carat
1.7 mm .02 carat 5.4 mm .60 carat
1.8 mm .025 carat 5.5 mm .63 carat
2.0 mm .079 inch .03 carat 5.6 mm .65 carat
2.1 mm .035 carat 5.8 mm .228 inch 3/4 carat
2.2 mm .04 carat 6.0 mm .236 inch .80 carat
2.4 mm .05 carat 6.2 mm .85 carat
2.5 mm .06 carat 6.4 mm .95 carat
2.7 mm .07 carat 6.5 mm .255 inch
or 1/4 inch
1.00 carat
2.8 mm .08 carat 6.6 mm 1.10 carat
2.9 mm .09 carat 6.8 mm 1.17 carat
3.0 mm .118 inch 1/10 carat 7.0 mm .276 inch 1-1/4 carat
3.1 mm .11 carat 7.2 mm 1.33 carat
3.2 mm .125 inch
or 1/8 inch
.12 carat 7.4 mm .291 inch 1-1/2 carat
3.3 mm .14 carat 7.6 mm 1.60 carat
3.4 mm .15 carat 7.8 mm .307 inch 1.75 carat
3.5 mm .16 carat 8.0 mm .315 inch 1.90 carat
3.6 mm .17 carat 8.2 mm 323 inch 2.00 carat
3.7 mm .18 carat 8.4 mm 2.15 carat
3.8 mm .150 inch 1/5 carat 8.6 mm .338 inch 2.25 carat
3.9 mm .22 carat 8.8 mm .346 inch 2.50 carat
4.0 mm .158 inch .23 carat 9.0 mm .354 inch 2.65 carat
4.1 mm .162 inch 1/4  carat 9.2 mm 2.85 carat
4.2 mm .30 carat 9.4 mm .370 inch 3.00 carat
4.4 mm .173 inch .33 carat 9.6 mm 3.15 carat
4.5 mm .35 carat 9.8 mm 3.35 carat
4.6 mm .181 inch 1/3 carat 10.0 mm .394 inch 3-1/2 carat


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