Diamond Carat Weight

Do you know that the term “carat” comes from a Greek word which means “fruit of the carob tree”? Early civilizations use the seeds of the carob tree as standard weights. This is because almost all carob seeds are identical in shape and size. During the Fourth General Conference on Weights and Measures which was held in 1907, it was decided that a diamond carat should weight 200 mg.  This was referred to as the metric carat and it is the universal standard that gemmologists use today.

One of the most obvious factors in determining the value of your investment diamond is carat weight — a metric that measures that size of a diamond. A carat is further divided into 100 points. For example, if a diamond weight 50 points, its equivalent carat weight is .50 carats.

Diamond Carat Weight - Independent Gemmological Laboratory

Comparing Different Diamond Carat Weights

Diamonds of with the same carat weight don’t necessarily sell for the same price. This is because the monetary value of a diamond will also depend on its quality. You can find high-quality diamonds in all sizes.  

It’s harder to find large diamonds so they are always more expensive than small stones of the same quality. For example, a one-carat diamond solitaire will always be more expensive than a diamond ring made from smaller diamonds with a total weight of one carat or more.

Diamond Carat Weight - Independent Gemmological Laboratory

IGL Will Help You Determine Your Diamond’s Carat Weight Accurately

Unsure about the real carat weight of your diamond? IGL uses modern technology and the most precise instruments in determining the carat weight of your diamond.