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AQUAMARINE
           
 

 
 

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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
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Website: www.plgems.com

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AQUAMARINE
Gemstone:
Shape:
Weight (ct):
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Aquamarine Facts 
Category beryl variety
Chemical formula Be3Al2Si6O18[1]
Identification
Color transparent (or can be translucent if included), greenish blue to blue green, typically light in tone[1]
Crystal system hexagonal[1]
Cleavage very difficult in one direction, almost never seen[1]
Fracture conchoidal[1]
Mohs Scale hardness 7.5 - 8[1]
Luster vitreous to resinous[1]
Polish luster vitreous [1]
Refractive index 1.577 - 1.583 (+/- .017)[1]
Optical Properties Double refractive, uniaxial negative[1]
Birefringence .005 - .009[1]
Dispersion .014[1]
Pleochroism weak to moderate, blue and greenish blue; or different tones of blue with lighter tones associated with the optic axis direction [1]
Ultraviolet fluorescence inert[1]
Absorption spectra indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.[1]
Specific gravity 2.72 (+.18, -.05)[1]