Star Sapphire and Zoisite Physical Properties

Star Sapphire

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

3.90-4.053.20-3.50

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Perfect {010} imperfect {100}

1.7 Mohs Hardness

Not Available6-7

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Ca₂Al₃(SiO₄)₃(OH)

Star Sapphire and Zoisite Chemical Formula

While comparing Star Sapphire 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 Star Sapphire and Zoisite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

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Star Sapphire and Zoisite Specific Gravity

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