Diamond Carat Weights
A carat is a unit of weight measurement for gemstones and diamonds. One carat is subdivided into 100 equal parts called points, with each point equaling 1/100th or .01 of a carat. No two diamonds and stones are exactly alike; therefore weight fractions are approximate and refer to a range of weight in decimal numbers. The chart below explains the range that diamonds and stones must fall into to be considered a certain weight or carat.
FRACTION
1/15 ct.
1/10 ct.
1/8 ct.
1/6 ct.
1/5 ct.
1/4 ct.
1/3 ct.
3/8 ct.
1/2 ct.
5/8 ct.
3/4 ct.
7/8 ct.
1 ct.
1-1/8 ct.
1-1/6 ct.
1-1/5 ct.
1-1/4 ct.
1-1/3 ct.
1-3/8 ct.
1-1/2 ct.
1-5/8 ct.
1-3/4 ct.
1-7/8 ct.
2 ct.
2-1/8 ct.
2-1/6 ct.
2-1/5 ct.
2-1/4 ct.
2-1/3 ct.
2-3/8 ct.
2-1/2 ct.
2-5/8 ct.
2-3/4 ct.
2-7/8 ct.
3 ct.
CARAT WEIGHT
0.065-0.08
0.085-0.11
0.115-0.14
0.145-0.17
0.18-0.22
0.23-0.28
0.29-0.36
0.37-0.44
0.45-0.57
0.58-0.68
0.69-0.79
0.80-0.94
0.95-1.11
1.12-1.14
1.15-1.17
1.18-1.22
1.23-1.28
1.29-1.36
1.37-1.44
1.45-1.57
1.58-1.68
1.69-1.79
1.80-1.94
1.95-2.11
2.12-2.14
2.15-2.17
2.18-2.22
2.23-2.28
2.29-2.36
2.37-2.44
2.45-2.57
2.58-2.68
2.69-2.79
2.80-2.94
2.95-3.11