Turquoise and Prase Opal Physical Properties

Turquoise

Prase Opal

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Physical Properties

Tenacity

Solubility

Soluble

Durability

Specific Gravity

2.30-2.901.98-2.25

1 7.18

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Fracture

Conchoidal

Cleavage

Good to perfect_usually N/A

None

Mohs Hardness

5-65-6.5

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

SiO 2 + H 2OUlrich Henn and Claudio C.

Turquoise and Prase Opal Chemical Formula

While comparing Turquoise and Prase Opal 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 Prase Opal chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Turquoise and Prase Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Prase Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Prase Opal Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 1.98-2.25 whereas that of Prase Opal is 1.98-2.25.