Diaspore and Lapis lazuli Physical Properties

Diaspore

Lapis lazuli

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.50-3.00

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

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

1.6 Cleavage

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

3,6

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

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

Diaspore and Lapis lazuli Chemical Formula

While comparing Diaspore and Lapis lazuli 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 Lapis lazuli chemical formula.

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

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Diaspore and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.