BLT197 Black Tourmaline Citrine and patterning vary between each

and patterning vary between each individual slab

into what is called volcanic glass

Clear Quartz

or obsidian

BLT197 Black Tourmaline Citrine and patterning vary between eachBlack Tourmaline crystal with termination. 2. 5" x 1. 5" x 3" 1. 25 lb 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 1400s, 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