Bertrandite and Tanzanite Physical Properties

Bertrandite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.59-2.603.35

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

Perfect {010}, imperfect {100}

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)

Ca₂Al₃(SiO₄)₃(OH)

Bertrandite and Tanzanite Chemical Formula

While comparing Bertrandite and Tanzanite 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 Tanzanite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Bertrandite and Tanzanite Specific Gravity

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