Augelite and Star Sapphire Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.70-2.75
3.90-4.05
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
Not Available
Mohs Hardness
4.5-5
Not Available
Chemical Composition
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2O 3Ulrich Henn and Claudio C.
Augelite and Star Sapphire Chemical Formula
While comparing Augelite and Star Sapphire 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 Augelite and Star Sapphire chemical formula.
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Augelite and Star Sapphire Specific Gravity
Another important criteria for qualitative analysis of gemstones is Augelite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.