Amazonite and Star Sapphire Physical Properties

Amazonite

Star Sapphire

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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

2.55-2.573.90-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

KAlSi₃O₈

Al 2O 3Ulrich Henn and Claudio C.

Amazonite and Star Sapphire Chemical Formula

While comparing Amazonite 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 Amazonite and Star Sapphire chemical formula.

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

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Amazonite and Star Sapphire Specific Gravity

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