Sapphire and Diaspore Physical Properties

Sapphire

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.033.30-3.40

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

None, but may exhibit parting

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

96.5-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Sapphire and Diaspore Chemical Formula

While comparing Sapphire and Diaspore 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 Sapphire and Diaspore chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Sapphire and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.