🔬 Science 4d ago · Editors of EarthSky

May birthstone: The magnificent green emerald

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May birthstone: The magnificent green emerald
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The May birthstone is the emerald. Image via Mauro Cateb/ Wikipedia (CC BY-SA 3.0).
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History of emeralds
Knowledge of emeralds dates back to antiquity. The name emerald derives from the Greek word smaragdos, a term applied to several kinds of green stones.
Royalty wore them in ancient Babylon and Egypt. For example, Queen Cleopatra is known to have worn emeral

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