Black Tourmaline Velvet Base
Black tourmaline, also called Schorl, accounts for up to 95% of all tourmaline in nature. Black tourmaline belongs to a family of aluminum borosilicates mixed with iron, magnesium, or other various metals. Its prismatic, vertically striated crystals may be long and slender, or thick and columnar, and are uniquely triangular in cross-section.
Chemical Formula: NaFe3 (Al, Fe) 6 [(OH, F) 4 (BO3) 2Si6O18]
***NOTE TO BUYER***
This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to unique nature of each mineral the size, shape and color may vary slightly.
The size of this product is categorized by weight. Because of this, the dimensions and style of the mineral may vary. If you have certain requirements regarding specifications, please note them within the order or contact us.