Large gems are more rare than small ones, so they often cost
much more per carat, even if they’re of equivalent quality.
A few gemological terms:
Per-carat price: The price of a gem divided by its carat
weight.
Metric carat: The international unit of measurement for gem
weight. One carat equals 0.20 gram.
Point: One one-hundredth of a carat (0.01 ct).
Unit price: The price per piece.
Photo: Michel Viard/AFP Courtesy: GIA.
Resource: Amanda. #eClarity
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