Turquoise and Neptunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.30-2.90
3.19-3.23
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Good to perfect_usually N/A
{110} good
Chemical Composition
CuAl6(PO4)4(OH)8 • 4H2O
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Turquoise and Neptunite Chemical Formula
While comparing Turquoise and Neptunite 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 Neptunite chemical formula.
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Turquoise and Neptunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Turquoise and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.