The Definitive Guide to the World of Color in Tourmaline Gemstones

The Definitive Guide to the World of Color in Tourmaline Gemstones

Cuprian Rubellite

Cuprian Rubellite

Crushed by Bruce Fry The following effort to discuss a member of the wonderful family of related minerals called tourmaline comes from diverse, mostly informal sources. Outside of direct experience with red tourmaline from Mozambique, I do not have the resources to...