Star Sapphire and Aegirine Physical Properties

Star Sapphire

Aegirine

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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

3.90-4.053.50-3.60

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Not Available

Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}

1.7 Mohs Hardness

Not Available6

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Star Sapphire and Aegirine Chemical Formula

While comparing Star Sapphire and Aegirine 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 Aegirine chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Star Sapphire Vs Tortoiseshell

Star Sapphire Vs Tourmaline

Star Sapphire and Aegirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Aegirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Aegirine Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.50-3.60 whereas that of Aegirine is 3.50-3.60.