Star Sapphire and Celestine Physical Properties

Star Sapphire

Celestine

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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

3.90-4.053.90-4.00

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Perfect on {001}, good on {210}, poor on {010}

1.7 Mohs Hardness

Not Available3-3.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

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

Star Sapphire and Celestine Chemical Formula

While comparing Star Sapphire and Celestine 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 Celestine chemical formula.

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

Compare Blue Gemstones

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Star Sapphire Vs Verdite

Star Sapphire Vs Tourmaline

Star Sapphire and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Celestine Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.90-4.00 whereas that of Celestine is 3.90-4.00.