Star Sapphire and Aragonite Physical Properties

Star Sapphire

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.052.93-2.96

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Star Sapphire and Aragonite Chemical Formula

While comparing Star Sapphire and Aragonite 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 Aragonite chemical formula.

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

Compare Blue Gemstones

Star Sapphire Vs Tortoiseshell

Star Sapphire Vs Verdite

Star Sapphire Vs Tourmaline

Star Sapphire and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.