Austinite and Star Ruby Physical Properties
Tenacity
Brittle
Not Available
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
3.95-4.10
Fracture
Brittle, Uneven, Brittle, Uneven
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Good in two directions parallel to the prism faces {110}
Not Available
Mohs Hardness
4-4.5
Not Available
Chemical Composition
CaZn(AsO4)(OH)
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Star Ruby Chemical Formula
While comparing Austinite and Star Ruby 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 Austinite and Star Ruby chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Austinite and Star Ruby Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.