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Amethyst
Amethyst

Star Sapphire
Star Sapphire



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Amethyst
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Star Sapphire

Amethyst and Star Sapphire Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
insoluble in common solvents
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.653.90-4.05
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Not Available
1.6 Cleavage
Indiscernible
Not Available
1.7 Mohs Hardness
7Not Available
Amber
2 10
1.8 Chemical Composition
SiO2
Al 2O 3Ulrich Henn and Claudio C.

Amethyst and Star Sapphire Chemical Formula

While comparing Amethyst 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 Amethyst and Star Sapphire chemical formula.

  • Chemical formula of Amethyst- SiO2
  • Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Amethyst and Star Sapphire Specific Gravity

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