Emerald is a gemstone and a variety of the mineral beryl colored green by trace amounts of chromium or sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds have many inclusions, so their toughness is classified as... Wikipedia
Color: Green
Associated month: May
Hardness (Mohs hardness scale): 7.5 – 8
Density: 2.67-2.78
Birefringence: δ = 0.0040–0.0070
Category: Beryl variety
Cleavage: Imperfect on the
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May 29, 2024 · Highly valued as gemstones, emeralds are a grass-green variety of beryl. The capacity of emeralds to deflect light and to break white light ...