It shares a similar quality and color to diamond, though it typically lacks the intense sparkle and is less hard than ...

SUMMARY Metrology is a mature field with a wide body of work on fundamental and applied measurement that can be applied to specific measuring needs. One of the ways GIA ensures quality measurements is ...

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 “18K gold,” which refers to ...