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Citrine is a yellow, brown color that is naturally
caused by traces of organic matter. However, if you heat up clear quartz
you can reproduce this yellowish color. Natural pale yellow citrine
gemstones are rare compared to the brownish treat heated quartz.
Tiger eye quartz exhibits an chatoyant
effect which is the shifting of light when the gem is moved, caused by
fibrous inclusions. A skilled gemologist can craft a beautiful
gem to capture this effect. Tiger eye should not be confused with the
expensive Cat’s Eye, a variety of chrysoberyl, the third hardest
mineral.
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