Diaspore and Sapphire Physical Properties

Diaspore

Sapphire

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.403.95-4.03

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

None, but may exhibit parting

1.7 Mohs Hardness

6.5-79

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Diaspore and Sapphire Chemical Formula

While comparing Diaspore and 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 Diaspore and Sapphire chemical formula.

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

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Diaspore and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.