DIAMOND & STONE 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. 

CARAT WEIGHT

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.

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

© 2019 House of Virtruve

 by Amanda Rigby & Dawn Santos