Villiaumite and Lazurite Physical Properties

Villiaumite

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

2.792.75

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

{100} Perfect, {010} Perfect, {001} Perfect

Imperfect on {110}

1.7 Mohs Hardness

25.5

2 10

1.8 Chemical Composition

NaFUlrich Henn and Claudio C.

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

Villiaumite and Lazurite Chemical Formula

While comparing Villiaumite 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 Villiaumite and Lazurite chemical formula.

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

Compare Gems Found in America

Villiaumite Vs Zincite

Villiaumite Vs Xonotlite

Villiaumite Vs Witherite

Villiaumite and Lazurite Specific Gravity

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