Rubellite and Crocoite Physical Properties

Rubellite

Crocoite

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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

3.01-3.065.90-6.10

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

1.6 Cleavage

Not Available

{110} Distinct, {001} Indistinct, {100} Indistinct

1.7 Mohs Hardness

7-7.52.5-3

2 10

1.8 Chemical Composition

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.

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Rubellite and Crocoite Chemical Formula

While comparing Rubellite and Crocoite 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 Rubellite and Crocoite chemical formula.

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.
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Rubellite Vs Scorzalite

Rubellite Vs Shattuckite

Rubellite Vs Serendibite

Rubellite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.