Shigaite and Turquoise Physical Properties

Shigaite

Turquoise

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.322.30-2.90

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {0001}

Good to perfect_usually N/A

1.7 Mohs Hardness

25-6

2 10

1.8 Chemical Composition

Not Available

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Shigaite and Turquoise Chemical Formula

While comparing Shigaite 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 Shigaite and Turquoise chemical formula.

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

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Shigaite and Turquoise Specific Gravity

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