Rare Cross Section of Tourmaline
Polished slice of a transparent tourmaline crystal showing colorful internal zoning. The most amazing fact of this piece is the triangular pattern that appear throughout the section. Perfectly formed geometric shapes like this, naturally occurring in a mineral’s formation, are rare.
Tourmaline is not a single mineral, but a group of several closely related minerals. The three most well-known members are Elbaite, Schorl, and Dravite. Tourmaline is extremely popular among collectors and is a well-known gemstone. It is the most multicolored mineral type known, occurring in virtually every color of the spectrum. Individual stones are often multicolored and are unsurpassed in their beauty.