Diaspore and Bertrandite Physical Properties

Diaspore

Bertrandite

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.59-2.60

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

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

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

6.5-76-7

2 10

1.8 Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Diaspore and Bertrandite Chemical Formula

While comparing Diaspore and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Diaspore and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.