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Coesite

Origin Of Name
Named after L. Coess, who first described it in detail

    Copyright: Wikipedia.org

A High-pressure Polymorph (crystal form) of Silica, silicon dioxide.

Physical Properties
. Hardness- 7 to 8
. Specific Gravity- 2.93
. Clevage- None
. Fracture- Conchoidal
. Luster- Vitreous
. Transparency- Transparent to translucent
. Colour- Colourless
. Streak- White

Crystal System- Monoclinc



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