Turquoise and Gahnospinel Physical Properties

Turquoise

Gahnospinel

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Physical Properties

Tenacity

Solubility

Soluble

Durability

Specific Gravity

2.30-2.903.65-4.55

1 7.18

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Fracture

Conchoidal

Cleavage

Good to perfect_usually N/A

None, but may exhibit slight parting

Mohs Hardness

5-67.5-8

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Turquoise and Gahnospinel Chemical Formula

While comparing Turquoise and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Turquoise and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.