Black Tourmaline, Tumbled Stone, 1 lb lot 25 Tumbling Rough

Tumbling Rough

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Discover the ice-sculpted landscape that intrigued and inspired John Muir

Chapter 10: A Few Bonuses

Black Tourmaline, Tumbled Stone, 1 lb lot 25 Tumbling RoughEach lot contains approximately 50 0. 5" 1" pieces. From Brazil. Black Tourmaline is also called Schorl, and accounts for ninety five percent of all Tourmaline in nature. It is black, or sometimes a deep blue that appears black. The term Schorl was in use before the 1400's, named for a town in Saxony, Germany, where Black Tourmaline was found in nearby tin mines. Black Tourmaline belongs to a complex family of aluminum borosilicate mixed with iron,