Poudretteite and Crystal Opal Physical Properties

Poudretteite

Crystal Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.51-2.531.97-2.22

1 7.18

1.5 Fracture

Conchoidal, Splintery

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

55.5-6.5

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 + H 2OUlrich Henn and Claudio C.

Poudretteite and Crystal Opal Chemical Formula

While comparing Poudretteite and Crystal 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 Poudretteite and Crystal Opal chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Violet Gemstones

Poudretteite Vs Sapphire

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Rubellite

Poudretteite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.