Wulfenite and Rubellite Physical Properties

Wulfenite

Rubellite

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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

6.50-7.003.01-3.06

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

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

1.6 Cleavage

On {011}, distinct; on {001}, {013}, indistinct

Not Available

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Wulfenite and Rubellite Chemical Formula

While comparing Wulfenite and Rubellite 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 Wulfenite and Rubellite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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Wulfenite and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.