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Gems
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Alexandrite
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One of the most fascinating gemstones throughout history is alexandrite: a gem variety of the mineral chrysoberyl that actually changes color from green in daylight to red in incandescent light. The first time you see it, it is hard to believe your eyes! Gems that show special optical effects are known as phenomenal stones. Chrysoberyl dominates this category, because not only is alexandrite the most spectacular color change gem, cat's-eye chrysoberyl has the most dramatic eye. Alexandrite has a distinguished and glamorous past: it was discovered in 1830 in Czarist Russia. Since the old Russian imperial colors are red and green it was named after Czar Alexander II on the occasion of his coming of age..
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