Rough High Quality Black Tourmaline / 1-4" AVG - 1 KILO LOT

Quantity: 1 kilogram

Average size range: 1 to 4 inches

Formed when boron forms compounds with iron-sodium molecules, Schorl black tourmaline, or simply black tourmaline, derives its name from the German village of Zschorlau where it was first discovered in a nearby tin mine in the late 1300s.