Bytownite and Star Sapphire Physical Properties

Bytownite

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

2.72-2.753.90-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Not Available

1.6 Cleavage

Perfect on [001], good on [010], imperfect on [110]

Not Available

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Al 2O 3Ulrich Henn and Claudio C.

Bytownite and Star Sapphire Chemical Formula

While comparing Bytownite 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 Bytownite and Star Sapphire chemical formula.

Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

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Bytownite and Star Sapphire Specific Gravity

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