GEM ENCYCLOPEDIA
FEATURED GEM
Garnet
Garnets are a set of closely related minerals forming a group, with gemstones in almost every color.
THE FACTS
The garnet group of related mineral species offers gems of every hue, including fiery red pyrope, vibrant orange spessartine, and rare intense-green varieties of grossular and andradite.
GIA’s Guide to Gemstones: Gem Encyclopedia
GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.
