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MORGANITE

           
 
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MORGANITE
Gemstone:
Shape:
Weight (ct):
 to
 
 
Morganite Facts 
Category Silicate Mineral species
Chemical formula Be3Al2(SiO3)6
Identification
Molecular Weight 537.50 gm
Color Pink, Salmon-color
Crystal habit Massive to well Crystalline
Crystal system Hexagonal - Dihexagonal Dipyramidal
Cleavage Imperfect on the [0001]
Fracture Conchoidal
Mohs Scale hardness 7.5-8
Luster Vitreous
Optical Properties Uniaxial (-)
Birefringence δ = 0.004 - 0.007
Ultraviolet fluorescence None (some fracture filling materials used to improve emerald's clarity do fluoresce, but the stone itself does not)
Streak White
Specific gravity Average 2.76
Diaphaneity Transparent to opaque
References [1][2]