NATURAL SNOWFLAKE OBSIDIAN CRYSTAL The Obsidian Crystals MINERAL MEASURES: 100mm x 90mm x 50mm WEIGH: 357g Obsidian is a natural volcanic glass. This glassy, lustrous mineral is found in lava flows. Obsidian is produced when lava cools very quickly. The lava cools so quickly that no crystals can form. Inclusions in Obsidian create different patterns or effects.
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