Because the small seeds are fairly uniform in size and weight, they were a useful standard for determining the weight of a gem. The modern carat system has its roots in the carob seed, which comes from the locust tree. Carat is also the standard unit of weight for most gemstones. One carat is equal to 200 milligrams, which is 1/5 of a gram or 0.20 gram.
The Difference between Carats, Karats and Carrotsĭiamond weight is stated in metric measurements called carats.Carat Weight and Gemstone Size – Two Different Things.Carat Weight and Shopping Considerations.How Does GIA Measure Diamond Carat Weight?.Here’s essential information you need to know.
It seems like a straightforward measurement, but there is more to it than a simple number. If you’re shopping for a diamond, carat weight is probably one of the important things you’re considering.