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Viridine
Viridine

Sardonyx
Sardonyx



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.05-3.21
-
None
7-7.5
(Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)
 
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2Ulrich Henn and Claudio C.