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Sardonyx
Sardonyx
☒

Violane
Violane
☒



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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.703.22-3.40
Amber ▶ ⊕
1 7.18
1.4 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.5 Cleavage
Not Available
Not Available
1.6 Mohs Hardness
6.5-75-6
Amber ▶ ⊕
2 10
1.7 Chemical Composition
SiO 2Ulrich Henn and Claudio C.
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)

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