. TOU187 Bicolor Tourmaline | The Gem Shop, Inc.

TOU187 Bicolor Tourmaline


Blue Tourmaline crystal with blue and green tourmaline and white inclusions from Brazil.

13mm long


Tourmaline is a complex family of aluminum borosilicate minerals mixed with iron, magnesium, or other metals that, depending on the proportions of its components, may form as red, pink, yellow, brown, black, green, blue or violet. Its prismatic, vertically striated crystals may be long and slender, or thick and columnar, and are uniquely triangular in cross-section.