Turquoise and Kyanite Physical Properties

Turquoise

Kyanite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.30-2.903.53-3.65

1 7.18

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Fracture

Conchoidal

Splintery

Cleavage

Good to perfect_usually N/A

[100] perfect [010] imperfect with 79° angle between

Mohs Hardness

5-64-7

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Al2SiO5

Turquoise and Kyanite Chemical Formula

While comparing Turquoise and Kyanite 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 Kyanite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Kyanite- Al2SiO5

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Turquoise and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.