Black Spinel 6mm Round - 15-16 Inch 68227 intricate patterns of minute black

intricate patterns of minute black flecks

this gemstone in its polished state looks like what it would be like to capture smoke in a stone -- bottomless black mixed with white wisps

it is made up of volcanic glass

Pink Tourmaline ranges in color from light pink to deep magenta

Black Spinel 6mm Round - 15-16 Inch 68227 intricate patterns of minute blackSpinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.