Star Sapphire and Amazonite Physical Properties

Star Sapphire

Amazonite

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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

3.90-4.052.55-2.57

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Not Available

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

KAlSi₃O₈

Star Sapphire and Amazonite Chemical Formula

While comparing Star Sapphire and Amazonite 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 Amazonite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Amazonite- KAlSi₃O₈

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Star Sapphire Vs Tourmaline

Star Sapphire and Amazonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.