Turquoise and Esperite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.30-2.90
4.28-4.42
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
Good to perfect_usually N/A
Distinct on [010] and [100] poor on [101]
Chemical Composition
CuAl6(PO4)4(OH)8 • 4H2O
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Turquoise and Esperite Chemical Formula
While comparing Turquoise and Esperite 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 Esperite chemical formula.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Turquoise and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Turquoise and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Esperite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 4.28-4.42 whereas that of Esperite is 4.28-4.42.