Tourmaline 3mm Banded Table Cut Cube - 15-16 Inch doorbusters-2025-BF it is made up of

it is made up of volcanic glass

brown and red bands of color allow the stone to be matched with many other gemstones in designs

Indigo gabbro is a color variant of the igneous mineral

the result was glass permeated with thousands of tiny metallic sparkles

black or brown veins running through it in web-like patterns

Tourmaline 3mm Banded Table Cut Cube - 15-16 Inch doorbusters-2025-BF it is made up ofTourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to dark. It can even exhibit various colors within the same specimen. Its name derives from the Sinhalese word turamali, which translates to stone of many colors. Due to this variety of colors, Tourmaline has often been confused with other stones. Many stones in the Russian crown jewels from the 17th century