Onyx and Charoite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
2.54-2.78
Fracture
Not Available
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indiscernible
Good in three directions
Chemical Composition
SiO2
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Onyx and Charoite Chemical Formula
While comparing Onyx and Charoite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Onyx and Charoite chemical formula.
- Chemical formula of Onyx- SiO2
- Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Onyx and Charoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Onyx and Charoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Charoite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.54-2.78 whereas that of Charoite is 2.54-2.78.