Diaspore and Spinel Physical Properties

Diaspore

Spinel

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.403.64-3.66

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

6.5-78

2 10

1.8 Chemical Composition

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

MgAl₂O₄

Diaspore and Spinel Chemical Formula

While comparing Diaspore and Spinel 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 Spinel chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Spinel- MgAl₂O₄

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Diaspore and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Spinel Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 3.64-3.66 whereas that of Spinel is 3.64-3.66.