Star Ruby and Gypsum Physical Properties
Tenacity
Not Available
Flexible
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.95-4.10
2.20-2.40
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Not Available
Perfect on {010}, distinct on {100}
Mohs Hardness
Not Available
2
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Star Ruby and Gypsum Chemical Formula
While comparing Star Ruby and Gypsum 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 Gypsum chemical formula.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Star Ruby and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Ruby and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.