Zoisite and Chrysoprase Physical Properties

Zoisite

Chrysoprase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.50

2.58-2.64

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect {010} imperfect {100}

None

1.7 Mohs Hardness

6-7

6.5-7

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

SiO₂ (with a high level of nickel impurities )

Zoisite and Chrysoprase Chemical Formula

While comparing Zoisite 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 Zoisite and Chrysoprase chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Zoisite and Chrysoprase Specific Gravity

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