Lazurite and Cryolite Physical Properties

Lazurite

Cryolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

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

Uneven

1.6 Cleavage

Imperfect on {110}

None observed

1.7 Mohs Hardness

5.52.5

2 10

1.8 Chemical Composition

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

Na 3AlF 6Ulrich Henn and Claudio C.

Lazurite and Cryolite Chemical Formula

While comparing Lazurite and Cryolite 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 Cryolite chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.

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Lazurite and Cryolite Specific Gravity

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