Star Sapphire and Beryllonite Physical Properties

Star Sapphire

Beryllonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.052.79-2.87

1 7.18

1.5 Fracture

Not Available

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Not Available

{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces

1.7 Mohs Hardness

Not Available5.5-6

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Star Sapphire and Beryllonite Chemical Formula

While comparing Star Sapphire and Beryllonite 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 Beryllonite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Star Sapphire and Beryllonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.