Augelite and Blue John Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.70-2.75
3.00-3.25
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)
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Augelite and Blue John Chemical Formula
While comparing Augelite and Blue John 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 Blue John chemical formula.
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Augelite and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Augelite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.