Andesine and Star Sapphire Physical Properties

Andesine

Star Sapphire

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.693.90-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

Not Available

1.6 Cleavage

Perfect on {001}, good on {010}

Not Available

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

Al 2O 3Ulrich Henn and Claudio C.

Andesine and Star Sapphire Chemical Formula

While comparing Andesine 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 Andesine and Star Sapphire chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Red Gemstones

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Andesine Vs Bloodstone Heliotrope

Andesine Vs Blue John

Andesine and Star Sapphire Specific Gravity

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