Diaspore and Faustite Physical Properties

Diaspore

Faustite

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Physical Properties

Tenacity

Very brittle

Solubility

insoluble

Durability

Specific Gravity

3.30-3.402.9

1 7.18

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Fracture

Conchoidal

Cleavage

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

{???} Indistinct

Mohs Hardness

6.5-74.5

2 10

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Chemical Composition

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

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Diaspore and Faustite Chemical Formula

While comparing Diaspore and Faustite 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 Faustite chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Diaspore and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Faustite Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 2.9 whereas that of Faustite is 2.9.