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EMERALD


Chemical Composition: Beryllium Aluminium Sillicate, Be 3 Al 2 (SiO 3 ) 6
Refractive Index: 1.57 - 1.60
Specific Gravity: 2.65 - 2.80
Crystal System: Hexagonal
Moh's Hardness: 7 ½
Emeralds are apart of the Beryl family and owe its green colour to traces of
chromium or vanadium. Almost all natural stones contain fissures and
inclusions making them a brittle stone that is easily chipped. These inclusions
are important as they help to distinguish the natural stones from the synthetic
emeralds as well as other green stones.
Localities for Emeralds include Columbia, India, Zambia, Zimbabwe, Brazil
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