Silver Sheen Obsidian Bangle

This listing is for one bracelet. 14.2mm x 10.2mm beads
Obsidian is a natural volcanic glass formed after eruptions and comes in a few different forms, including Snowflake Obsidian, Rainbow Obsidian, and Sheen Obsidian. The use of Obsidian dates back to the Stone Age, and it has been used for thousands of years in weaponry and rituals. The Mesoamericans and the Mayans polished it into mirrors for use in contacting spirits and as portals to other realms. There have more recently been bright blue and green transparent "obsidians" seen on the market - these are in fact just manmade colored glass. 
Silver Sheen Obsidian is a naturally occurring variety of volcanic glass obsidian, with a wonderful silver shimmer when the light catches it. This is caused by internal gas bubbles and nanoparticle inclusions.