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Rough Snowflake Obsidian from Utah. Black obsidian with natural "snowflakes" of light gray spots, formed through devitrification when molecules within glass (which has no crystal structure) change their structure and crystallize.
Size ranges between 1 - 15lb pieces. Typical pieces are approximately 5lbs and 3"-7" long.
Primary image features the rock wet.
If you have a preference on the size or number of rocks you will receive, please describe this in your order notes at checkout.