Lapis lazuli and Diaspore Physical Properties

Lapis lazuli

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.50-3.003.30-3.40

1 7.18

1.5 Fracture

Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

3,6

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

1.7 Mohs Hardness

5.56.5-7

2 10

1.8 Chemical Composition

The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄

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

Lapis lazuli and Diaspore Chemical Formula

While comparing Lapis lazuli 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 Lapis lazuli and Diaspore chemical formula.

Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Lapis lazuli and Diaspore Specific Gravity

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