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Physical Properties of Emeralds
MINERAL: Beryl, CHEMISTRY: Be3Al2Si6O18, COLOR: Vibrant green
REFRACTIVE INDEX: 1.577 to 1.583, BIREFRINGENCE: 0.005 to 0.009
SPECIFIC GRAVITY: 2.72, MOHS HARDNESS: 7.5 to 8
MINERAL: Beryl, CHEMISTRY: Be3Al2Si6O18, COLOR: Vibrant green
REFRACTIVE INDEX: 1.577 to 1.583, BIREFRINGENCE: 0.005 to 0.009
SPECIFIC GRAVITY: 2.72, MOHS HARDNESS: 7.5 to 8
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