Anhydrite and Onyx Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
2.55-2.70
Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Not Available
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Indiscernible
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
SiO2
Anhydrite and Onyx Chemical Formula
While comparing Anhydrite and Onyx 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 Anhydrite and Onyx chemical formula.
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Onyx- SiO2
Anhydrite and Onyx Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anhydrite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.