Star Sapphire and Hibonite Physical Properties

Star Sapphire

Hibonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.053.84

1 7.18

1.5 Fracture

Not Available

Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Not Available

{0001} good, {10 1 0} parting

1.7 Mohs Hardness

Not Available7.5-8

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

(Ca,Ce)(Al,Ti,Mg)12O19

Star Sapphire and Hibonite Chemical Formula

While comparing Star Sapphire and Hibonite 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 Hibonite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19

Compare Blue Gemstones

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Star Sapphire Vs Verdite

Star Sapphire Vs Tourmaline

Star Sapphire and Hibonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.84 whereas that of Hibonite is 3.84.