Obsidian
What is Obsidian Obsidian is an igneous rock formed from rapidly cooled molten lava. It's a mineraloid, lacking a crystalline structure, typically found in jet-black color. Variations in ...
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Opal
The Uses of Opal Opal is one of the most attractive stones and with its wonderful traits and variety of deep, rich colors that it comes in, it has become one of the more popular gemstones of our ...
