Pumpellyite and Boulder Opal Physical Properties

Pumpellyite

Boulder Opal

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.20-3.30

Perfect

5-6

Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.

1.98-2.25

Conchoidal

None

5-6.5

SiO 2 + H 2OUlrich Henn and Claudio C.

Pumpellyite and Boulder Opal Chemical Formula

While comparing Pumpellyite and Boulder 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 Pumpellyite and Boulder Opal chemical formula.

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Pumpellyite and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pumpellyite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pumpellyite Vs Boulder Opal during the identification of gemstone. Specific gravity of Pumpellyite is whereas that of Boulder Opal is .