Tuesday, December 17, 2013

Gemstone of the Week: Rainbow Obsidian

(Image of rainbow obsidian found on gemrockauctions.com)

Rainbow Obsidian is another of the unusual varieties of Obsidian and is a such a gorgeous stone. The stunning multicoloured iridescence of this gem is caused by the presences of Magnetite nanoparticle inclusions. Rainbow Obsidian is found in very few locations. It may be found in Jalisca, Mexico; Modoc co. California, and  Lake Co. Oregon. Rainbow Obsidian is also known as iris Obsidian. Like most Obsidian, Rainbow Obsidian tends to be fairly inexpensive.