Polished Obsidian (REF:OBSID1)

Obsidian is a volcanic glass that occurs in a variety of colours such as black, brown, green, red/black, brown/black, mahogany, black with rainbow patterns/colours, black and white know as snowflake obsidian.

The fragments of the rock are sharp and have been used as cutting implements.

Black Obsidian with its glossy black colour, can also look a very dark brown when a strong light is shined on thin edges.