The 5 C's: Carat Weight
Carat weight is a unit of measure used to weight gemstones

All precious gemstones, including diamonds, have a weight which is expressed in carats. One carat is divided into 100 "points" so that a diamond of 50 points is described as a half carat in size, or 0.50 carat. Size is one of the factors in determining the value of the diamond, but other factors such as cut, clarity and color will also effect the final price.

Diamond prices typically take price jumps in the following weight categories:

.07-.10 ct (1/10)	.38-.44 ct (3/8)	1.00-1.50 ct
.10-.13 ct (1/12)	.45-.49 ct (lite 1/2)	1.51-1.99 ct
.14-.17 ct (1/6)	.50-.69 ct (1/2)	2.00-2.99 ct
.18-.22 ct (1/5)	.70-.89 ct (3/4)	3.00-3.99 ct
.23-.29 ct (1/4)	.90-.94 ct (7/8)	4.00-4.99 ct
.30-.37 ct (1/3)	.95-.99 ct (lite ct)	5.00 ct plus

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