Bertrandite and Diaspore Physical Properties

Bertrandite

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

2.59-2.603.30-3.40

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

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

1.7 Mohs Hardness

6-76.5-7

2 10

1.8 Chemical Composition

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

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

Bertrandite and Diaspore Chemical Formula

While comparing Bertrandite 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 Bertrandite and Diaspore chemical formula.

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

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Bertrandite and Diaspore Specific Gravity

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