Lazurite and Diaspore Physical Properties

Lazurite

Diaspore

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1 Physical Properties

1.1 Tenacity

Brittle

Very brittle

1.2 Solubility

Soluble

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.753.30-3.40

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Imperfect on {110}

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

5.56.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Lazurite and Diaspore Chemical Formula

While comparing Lazurite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Lazurite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.