Star Ruby and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
3.95-4.10
4.27-4.29
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Not Available
Perfect {010}
Mohs Hardness
Not Available
5-5.5
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
FeO(OH)Arthur Thomas , Gemstones (2009)
Star Ruby and Goethite Chemical Formula
While comparing Star Ruby and Goethite 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 Goethite chemical formula.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Star Ruby and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Ruby and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Goethite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 4.27-4.29 whereas that of Goethite is 4.27-4.29.