Cosmic Obsidian (Snowflake Obsidian) (great quality)

Sicily, Italy
Gems, 7.85 ct, 29.77 mm x 13.90 mm
Start Time: 07/01/2010 7:00:00 pm (CDT)
End Time: 07/08/2010 7:00:00 pm (CDT)
Auction Closed

Item Description

This material is known by two trade names in the gem world: Cosmic Obsidian and Snowflake Obsidian. The material is a natrually ocurring volcanic glass which contains white spherical "snowflake"-like inclusions of Cristobalite which is a tetragonal Silicon Dioxide (chemically identical to Quartz). Typically, this type of Obsidian is opaque, but we recently purchased a small parcel of excellent quality stones that are actually translucent! This "Pear Cabochon" cut stone has a lovely internal smoky color when backlit, and is filled with many beautiful "snowflake" inclusions. A great stone of this hard to find material.

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