Brookite and Beryllonite Physical Properties

Brookite

Beryllonite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.87-4.142.79-2.87

1 7.18

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Fracture

Subconchoidal, Conchoidal

Conchoidal

Cleavage

Poor on {120}, in traces on {001}

{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces

Mohs Hardness

5.5-65.5-6

2 10

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Chemical Composition

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

NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Brookite and Beryllonite Chemical Formula

While comparing Brookite and Beryllonite 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 Brookite and Beryllonite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Brookite and Beryllonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Beryllonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Beryllonite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.79-2.87 whereas that of Beryllonite is 2.79-2.87.