Carnelian and Zoisite Physical Properties

Carnelian

Zoisite

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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

2.58-2.64

3.20-3.50

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Absent

Perfect {010} imperfect {100}

1.7 Mohs Hardness

6.5-7

6-7

1.8 Chemical Composition

SiO₂

Ca₂Al₃(SiO₄)₃(OH)

Carnelian and Zoisite Chemical Formula

While comparing Carnelian 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 Carnelian and Zoisite chemical formula.

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

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Carnelian and Zoisite Specific Gravity

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