Polyhalite and Chrysoprase Physical Properties

Polyhalite

Chrysoprase

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.58-2.64

1 7.18

1.5 Fracture

Conchoidal, Brittle

Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

None

1.7 Mohs Hardness

3.56.5-7

2 10

1.8 Chemical Composition

Not Available

SiO₂ (with a high level of nickel impurities )

Polyhalite and Chrysoprase Chemical Formula

While comparing Polyhalite and Chrysoprase 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 Polyhalite and Chrysoprase chemical formula.

Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Polyhalite and Chrysoprase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.