Turquoise and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
2.30-2.90
1.77
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Not Available
Cleavage
Good to perfect_usually N/A
Perfect on {10 1 0}
Chemical Composition
CuAl6(PO4)4(OH)8 • 4H2O
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Turquoise and Ettringite Chemical Formula
While comparing Turquoise and Ettringite 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 Turquoise and Ettringite chemical formula.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Turquoise and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Turquoise and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 1.77 whereas that of Ettringite is 1.77.