Verdite and Lazurite Physical Properties

Verdite

Lazurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-3.02.75

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

{110} Good

Imperfect on {110}

1.7 Mohs Hardness

35.5

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

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

Verdite and Lazurite Chemical Formula

While comparing Verdite 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 Verdite and Lazurite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Verdite and Lazurite Specific Gravity

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