Obsidian Bracelet with Evil Eye Charm It is a hydrous calcium

It is a hydrous calcium sulfate that is found in many places on earth

heulandite

an area known for the other famous blue stone

and gray hues

The amount of cobalt contained within the specimen usually determines how pink the specimen is

Obsidian Bracelet with Evil Eye Charm It is a hydrous calciumStone: Obsidian Bead: Round 6mm Average Length: 7 in. Obsidian is a naturally occurring form of volcanic glass. Obsidian forms as lava cools very rapidly and is not considered a mineral as its lacks any form of crystal structure. It is said that obsidian is actually a mistranslation from Pliny the Elder's Natural History. The first spelling of the word was obsian. Obsidian has been used to make surgical blades and arrowheads throughout history because