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Description
Group: Beryl. Hardness: 7,5-8. Specific Gravity: 2,68-2,76. Crystal System: hexagonal. Index of Refraction:1,570-1,575. Transparency: from transparent to opaque. Emerald is composed of silicate, aluminum, and beryl. The color, comprises several shades of green, depending on the place of origin. Emerald is mined in Colombia, Brazil, South Africa, India, and Madagascar.
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Emerald-Gemstones