Grandidierite and Diaspore Physical Properties

Grandidierite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.003.30-3.40

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Perfect

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

1.7 Mohs Hardness

7.56.5-7

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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

Grandidierite and Diaspore Chemical Formula

While comparing Grandidierite 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 Grandidierite and Diaspore chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Grandidierite and Diaspore Specific Gravity

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