Riebeckite and Star Sapphire Physical Properties

Riebeckite

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

3.28-3.443.90-4.05

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

Not Available

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Not Available

1.7 Mohs Hardness

5.0-6.0Not Available

2 10

1.8 Chemical Composition

Not Available

Al 2O 3Ulrich Henn and Claudio C.

Riebeckite and Star Sapphire Chemical Formula

While comparing Riebeckite 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 Riebeckite and Star Sapphire chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

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Riebeckite and Star Sapphire Specific Gravity

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