Star Ruby and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.10
3.06
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
Not Available
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
Not Available
Not Available
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Co3(AsO4)2•8(H2O)
Star Ruby and Erythrite Chemical Formula
While comparing Star Ruby and Erythrite 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 Star Ruby and Erythrite chemical formula.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Star Ruby and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Ruby and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 3.06 whereas that of Erythrite is 3.06.