Rough Black Tourmaline / 1-5" AVG - 1 LB. LOT

Quantity: 1 pound

Average size range: 1 to 5 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.