Quartz and Zoisite Physical Properties

Quartz

Zoisite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65

3.20-3.50

1.5 Fracture

Conchoidal, Conchoidal, Brittle, Gems

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

1.6 Cleavage

{0110} Indistinct

Perfect {010} imperfect {100}

1.7 Mohs Hardness

6-7

1.8 Chemical Composition

SiO₂

Ca₂Al₃(SiO₄)₃(OH)

Quartz and Zoisite Chemical Formula

While comparing Quartz and Zoisite 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 Quartz and Zoisite chemical formula.

Chemical formula of Quartz- SiO₂
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Quartz and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Quartz and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Quartz and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Quartz is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.