Emerald is one of the oldest and most popular gems in the world that almost everyone knows and is interested in, and it can be called the king of gemstones.
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Color: green, yellow-green, bluish-green
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Crystal structure: hexagonal
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Luster: vitreous
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Transparency: transparent to opaque
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Refractive index: 1.569-1.602
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Specific Gravity: 2.76
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Mohs hardness: 7.5 – 8
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Cleavage: indistinct
Click here to buy cabochon Emerald.
Click here to buy facet Emerald.