Online Verification

Carat / Weight – 4C’s of Diamond Certification

Evaluating Carat and Weight

Carat is the measure of a diamond’s weight. The term “carat” originates from the Greek word "karaton," which refers to the carob seed that was used to balance scales in ancient times. However, a diamond’s carat is not the same as karat which is used to measures gold purity.

Carat is the easiest of the 4C’s to understand and measure as it is straightforward math. Carats are subdivided into points and there are 100 points in one carat:
1 carat = 200 milligrams (0.2 grams)

The greater the carat weight, the rarer the diamond and the more expensive the diamond is. Usually the price breaks down to: Total Price = Weight x Price per Carat

 
Ct 0.05 0.10 0.20 0.25 0.30 0.40 0.50 0.70 0.90 1.00 1.25 1.50 1.75 2.00 2.50 3.00
D 2.5 3.0 3.8 4.1 4.5 4.8 5.2 5.8 6.3 6.5 6.9 7.4 7.8 8.2 8.8 9.4
H 1.5 1.8 2.3 2.5 2.7 3.0 3.1 3.5 3.8 3.9 4.3 4.5 4.7 4.9 5.3 5.6

D = Diameter     H = Depth

4C’s
Color
Clarity
Cut

See a detailed diamond certificate.

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