Diaspore and Precious Opal Physical Properties

Diaspore

Precious Opal

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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

3.30-3.401.98-2.25

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

6.5-75-6.5

2 10

1.8 Chemical Composition

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

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Diaspore and Precious Opal Chemical Formula

While comparing Diaspore and Precious Opal 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 Precious Opal chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

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Diaspore and Precious Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diaspore and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.