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Star Sapphire
Star Sapphire

Tanzanite
Tanzanite



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Star Sapphire
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Tanzanite

Star Sapphire and Tanzanite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Hard
1.4 Specific Gravity
3.90-4.053.35
Amber
1 7.18
1.5 Fracture
Not Available
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
Not Available
Perfect {010}, imperfect {100}
1.7 Mohs Hardness
Not Available6.5-7
Amber
2 10
1.8 Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Ca2Al3(SiO4)3(OH)

Star Sapphire and Tanzanite Chemical Formula

While comparing Star Sapphire and Tanzanite 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 Tanzanite chemical formula.

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

Star Sapphire and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.35 whereas that of Tanzanite is 3.35.