Obsidian - 100 pounds* Blue Color: Silicon in its pure

Color: Silicon in its pure form is typically dark gray

Clear quartz and Naturally white

The luster can vary depending on the surface finish and the presence of any impurities or inclusions

SMALL PIECES ONLY

Obsidian - 100 pounds* Blue Color: Silicon in its pureNatural Obsidian from Mexico 100 pounds* Mostly large pieces *Requires 150lbs of shipping space Obsidian is a naturally occurring volcanic glass that typically forms when lava cools rapidly without sufficient time for crystal growth. Color: Obsidian comes in various colors, including black, brown, gray, and green. The most common is black obsidian, which is often referred to simply as "obsidian." Hardness: Obsidian has a hardness of approximately 5 to