Chrysoprase and Turquoise Physical Properties

Chrysoprase

Turquoise

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.642.30-2.90

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

Good to perfect_usually N/A

1.7 Mohs Hardness

6.5-75-6

2 10

1.8 Chemical Composition

SiO₂ (with a high level of nickel impurities )

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Chrysoprase and Turquoise Chemical Formula

While comparing Chrysoprase 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 Chrysoprase and Turquoise chemical formula.

Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Chrysoprase and Turquoise Specific Gravity

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