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Star Sapphire
Star Sapphire

Pezzottaite
Pezzottaite



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Star Sapphire
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Pezzottaite

Star Sapphire and Pezzottaite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.90-4.05
2.90-3.14
1.5 Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Not Available
Imperfect; basal
1.7 Mohs Hardness
Not Available
7.5-8
1.8 Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Star Sapphire and Pezzottaite Chemical Formula

While comparing Star Sapphire and Pezzottaite 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 Pezzottaite chemical formula.

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

Star Sapphire and Pezzottaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Pezzottaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Pezzottaite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.90-3.14 whereas that of Pezzottaite is 2.90-3.14.