TIGERSEYE
Tiger's eye
Tiger's eye is achatoyant gemstone that is usually a metamorphic rock that is a golden to red-brown color, with a silky luster. A member of the quartz group, it is a classic example of pseudomorphous replacement by silica of fibrous crocidolite . An incompletely silicified blue variant is called Hawk's eye.The above text is a snippet from Wikipedia: Tiger's eye
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