Size Large: 25mm-L x 22mm-W x 17mm-D
Size Small: 22mm-L x 20mm-W x 15mm-D
Qty: 5 Beads / Length: 4 in.
Weight: 40 g.

Obsidian is a natural glass. It is formed from volcanic lava that has cooled too quickly. It has been used since prehistoric times to make tools, weapons, masks, mirrors and jewelry. These beautiful nuggets are a great enhancement to any design.

Mohs' Hardness Scale: 5