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By Tom Harmon
Salvia Purple Chalcedony #1
The Ruby in Fuchsite Slabs feature dark pink ruby crystals
along with numerous diagrams and illustrations
Snowflake Obsidian, Tumbled Stone, 1 lb lot Animal Carvings By Tom HarmonObsidian is an organically created glass, formed through felsic lava that rapidly cools after exploding past the earths crust. Typical Obsidian is a semi translucent black that can have slight tints of green or brown. This obsidian is black with natural "snowflakes" of light gray spherulites. The spots are formed through devitrification when molecules within glass (which has no crystal structure) change their structure and crystallize. Tumbled stones
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