EMERALD

           
 
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PL GEMS, INC.
650 S. Hill Street, Booth D16
Los Angeles, CA 90014

Phone: (213) 623-2829, Fax: (213) 622-3414

Email: plgems@gmail.com
Website: www.plgems.com

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EMERALD
Gemstone:
Shape:
Weight (ct):
 to
 
 
Emerald Facts
Category Beryl variety
Chemical formula Beryllium aluminium silicate with chromium, Be3Al2(SiO3)6::Cr
Identification
Color Green
Crystal habit Hexagonal Crystals
Crystal system Hexagonal
Cleavage Poor Basal Cleavage (Seldom Visible)
Fracture Conchoidal
Mohs Scale hardness 7.5 - 8.0
Luster Vitreous
Refractive index 1.576 - 1.582
Pleochroism Distinct, Blue-Green/Yellow-Green
Streak White
Specific gravity 2.70 - 2.78