Lazurite and Vlasovite Physical Properties

Lazurite

Vlasovite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Nearly insoluble in HCl and HNO₃

1.3 Durability

Not Available

1.4 Specific Gravity

2.752.97

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Imperfect on {110}

Distinct on {010}

1.7 Mohs Hardness

5.56

2 10

1.8 Chemical Composition

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

Not Available

Lazurite and Vlasovite Chemical Formula

While comparing Lazurite and Vlasovite 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 Lazurite and Vlasovite chemical formula.

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

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Lazurite and Vlasovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Vlasovite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 2.97 whereas that of Vlasovite is 2.97.