Lazurite and Natrolite Physical Properties

Lazurite

Natrolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.752.20-2.26

1 7.18

1.5 Fracture

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

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

Imperfect on {110}

Perfect on {110}

1.7 Mohs Hardness

5.55-5.5

2 10

1.8 Chemical Composition

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

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Lazurite and Natrolite Chemical Formula

While comparing Lazurite and Natrolite 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 Natrolite chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazurite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.