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Star Sapphire
Star Sapphire

Brookite
Brookite



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Star Sapphire
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Brookite

Star Sapphire and Brookite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.90-4.053.87-4.14
Amber
1 7.18
1.5 Fracture
Not Available
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Not Available
Poor on {120}, in traces on {001}
1.7 Mohs Hardness
Not Available5.5-6
Amber
2 10
1.8 Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Star Sapphire and Brookite Chemical Formula

While comparing Star Sapphire and Brookite 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 Brookite chemical formula.

  • Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Star Sapphire and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Brookite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.87-4.14 whereas that of Brookite is 3.87-4.14.