Pezzottaite and Star Sapphire Physical Properties

Pezzottaite

Star Sapphire

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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

2.90-3.143.90-4.05

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Imperfect; basal

Not Available

1.7 Mohs Hardness

7.5-8Not Available

2 10

1.8 Chemical Composition

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Al 2O 3Ulrich Henn and Claudio C.

Pezzottaite and Star Sapphire Chemical Formula

While comparing Pezzottaite and Star Sapphire 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 Pezzottaite and Star Sapphire chemical formula.

Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

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Pezzottaite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pezzottaite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pezzottaite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Pezzottaite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.