Beryllonite and Lazurite Physical Properties

Beryllonite

Lazurite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.79-2.872.75

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

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

Imperfect on {110}

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

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

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Beryllonite and Lazurite Chemical Formula

While comparing Beryllonite and Lazurite 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 Beryllonite and Lazurite chemical formula.

Chemical formula of Beryllonite- NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Compare Colorless Gems

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Beryllonite Vs Cancrinite

Beryllonite Vs Bytownite

Beryllonite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 2.75 whereas that of Lazurite is 2.75.