Diaspore and Lazurite Physical Properties

Diaspore

Lazurite

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1 Physical Properties

1.1 Tenacity

Very brittle

Brittle

1.2 Solubility

insoluble

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.75

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

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

1.6 Cleavage

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

Imperfect on {110}

1.7 Mohs Hardness

6.5-75.5

2 10

1.8 Chemical Composition

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

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

Diaspore and Lazurite Chemical Formula

While comparing Diaspore 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 Diaspore and Lazurite chemical formula.

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

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Diaspore and Lazurite Specific Gravity

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