Obsidian Cube (Chipped) This most commonly occurs when

This most commonly occurs when water rich in manganese and iron flow through layers of limestone

Tourmaline is not a one-trick pony when it comes to metaphysics

Chemical Formula: {Ca2}{Mg5}(Si8O22)(OH)2

everything from soft lavenders to deep purple

Obsidian Cube (Chipped) This most commonly occurs whenSize: 1. 2 in. Weight: 2. 1 oz Chemical Formula: SiO (Amorphous Volcanic Glass) Commonly found in Italy, Scotland, Mexico, Argentina, Greece, Iceland, Russia, New Zealand, Japan, and The United States. 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