Tourmaline

Tourmaline is the name of a large group of crystallized boron silicate minerals. Tourmalines share a common crystal structure and similar physical properties – but vary tremendously in chemical composition. Tourmaline occur in more colors and color combinations than almost any other mineral group, including pink, green, blue and black tourmalines.

It is a tremendously popular gemstone for jewelry and for collectors. The name derives from the Sinhalese word for carnelian. Watermelon and Paraiba tourmaline have become especially popular.