Zoisite and Amazonite Physical Properties

Zoisite

Amazonite

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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

2.55-2.57

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect {010} imperfect {100}

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

1.7 Mohs Hardness

6-7

6-6.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

KAlSi₃O₈

Zoisite and Amazonite Chemical Formula

While comparing Zoisite and Amazonite 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 Amazonite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Amazonite- KAlSi₃O₈

Compare Brown Gemstones

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Zoisite Vs Sphene

Zoisite and Amazonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.