Kyanite and Turquoise Physical Properties

Kyanite

Turquoise

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.65

2.30-2.90

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

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

Good to perfect_usually N/A

1.7 Mohs Hardness

4-7

5-6

1.8 Chemical Composition

Not Available

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Kyanite and Turquoise Chemical Formula

While comparing Kyanite and Turquoise 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 Kyanite and Turquoise chemical formula.

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

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Kyanite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.