Bertrandite and Dioptase Physical Properties

Bertrandite

Dioptase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.603.25-3.35

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

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

Perfect in three directions

1.7 Mohs Hardness

6-75

2 10

1.8 Chemical Composition

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

CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Bertrandite and Dioptase Chemical Formula

While comparing Bertrandite and Dioptase 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 Dioptase chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bertrandite and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.