Black Onyx
Black Onyx  is a member of the chalcedony family (a form of quartz), and is generally artificially blackened to enhance its color. It is ideal for carving, engraving, fashioning into beads, and decorating pottery. Popular worldwide, it is the most common of all gems. Early man believed black onyx cured insomnia, bred prudence and caution, and brought its owner strength and victory in battle. A versatile and durable stone, onyx was also used to make tools.
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