Topaz and Augelite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.70-2.75
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
[001] Perfect
From the Greek for luster, for its pearly luster on the cleavage.
Chemical Composition
Al2SiO4(F,OH)2
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Topaz and Augelite Chemical Formula
While comparing Topaz and Augelite 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 Topaz and Augelite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Topaz and Augelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Augelite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.70-2.75 whereas that of Augelite is 2.70-2.75.