Glossary Blog » American Gem Society

A gemologist is a title granted by a gemological institute such as the American Gem Society (AGS) or the Gemological Institute of America (GIA)

Carbon is an element. Diamond, graphite, and carbon black are all carbon; the carbonates, like calcite, contain some carbon in combination with other elements.

Brilliant. A definition. A type of gem cutting used especially on diamonds with...

This is Why Peridot, The Birthstone for August is Out of this World August babies, prepare to be dazzled by the birthstone of your dreams: Peridot. a gemstone that's as vibrant and refreshing as a summer breeze. Picture this: a gem with the color of fresh limes, the brilliance of sunshine, and a history that's out of this world. Yeah, that's peridot, and it's...