Precious Opal and Pyroxmangite Physical Properties

Precious Opal

Pyroxmangite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.253.76-3.77

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

{110} Perfect, {110} Perfect

1.7 Mohs Hardness

5-6.55-6

2 10

1.8 Chemical Composition

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

(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

Precious Opal and Pyroxmangite Chemical Formula

While comparing Precious Opal and Pyroxmangite 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 Precious Opal and Pyroxmangite chemical formula.

Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
Chemical formula of Pyroxmangite- (Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Precious Opal and Pyroxmangite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious Opal and Pyroxmangite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Pyroxmangite Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 3.76-3.77 whereas that of Pyroxmangite is 3.76-3.77.