Difference between revisions of "Peridot"

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{{peridot}}
 
{{peridot}}
[[Image:Peridot.JPG|left|framed|Peridot from Pakistan]] <br clear="left" />
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[[Image:Ovalperidot.JPG|left|framed|Flawless faceted Peridot <br />Photo courtesy of Lembeck Gems]] <br clear="left" />

Revision as of 13:45, 9 January 2007

Peridot
Chemical composition (Mg,Fe)2SiO4
Crystal system Orthorhombic
Habit Prismatic
Cleavage Poor
Fracture Conchoidal
Hardness 6.5
Optic nature Biaxial +
Refractive index 1.65 - 1.69
Birefringence 0.036
Dispersion Medium, 0.020
Specific gravity 3.34
Lustre Vitreous
Pleochroism Weak
Flawless faceted Peridot
Photo courtesy of Lembeck Gems