Sapphire and Zincite Physical Properties

Sapphire

Zincite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.035.50-5.90

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None, but may exhibit parting

On {10 1 0}, perfect; parting on {000 1 }

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Sapphire and Zincite Chemical Formula

While comparing Sapphire and Zincite 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 Sapphire and Zincite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Sapphire and Zincite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Zincite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 5.50-5.90 whereas that of Zincite is 5.50-5.90.