Diamond Carat

The “C” That Determines The Weight Of Your Diamond

Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18 Karat gold,” which refers to gold purity.) (Learn more at GIA)

  • Diamond carat weight is just one factor when determining the value of a diamond. Which means that two diamonds of the same weight can be valued differently. That’s why it’s important to understand the other 3 of the 4Cs when choosing your diamond.
  • Carat weight is not the only thing that determines your diamond’s size. Size can be defined as a diamond’s weight and surface measurements. The “size”, as in the diameter or measurements, is determined by the cut of the diamond. For example, if you have two diamonds weighing 1 carat each, and one was cut correctly and the other was cut too deep, the deeper cut diamond would measure smaller in diameter, appearing more like a .80-.90 carat diamond. This is why cut is so important—it is the major factor in both the sparkliness AND overall size of your diamond.
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