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Chatoyancy
The cat's eye effect sometimes seen in gemstones such as chrysoberyl, apatite and tourmaline is known by the technical name of chatoyancy. The effect is caused by tiny parallel inclusions that give the appearance of a narrow line similar to a cat's eye. Often a gemstone needs to be viewed in natural light to see the chatoyancy effect.
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- Part of Speech: noun
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- Industry/Domain: Fashion
- Category: General jewelry; Gemstones
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