Sillimanite and Diaspore Physical Properties

Sillimanite

Diaspore

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1 Physical Properties

1.1 Tenacity

Tough

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.263.30-3.40

1 7.18

1.5 Fracture

Splintery

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

{010} perfect

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

1.7 Mohs Hardness

6-7.56.5-7

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Sillimanite and Diaspore Chemical Formula

While comparing Sillimanite 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 Sillimanite and Diaspore chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Sillimanite and Diaspore Specific Gravity

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