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A rock; common name for a variety of quartz; with prominent cat’s eye effect because of parallel intergrowth of quartz crystals and altered amphibole fibres that mostly turned into limonite.
Tiger’s eye — specimen 0618
, photo © NMNHS
Material from ‘Repository’
— 33.24 ct, no locality data.
Gemmology — gemstones
National Museum of Natural History, Sofia
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.