Rubellite and Charlesite Physical Properties

Rubellite

Charlesite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.01-3.061.79

1 7.18

1.5 Fracture

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

Irregular/uneven, Brittle, Metallic

1.6 Cleavage

Not Available

Perfect on {10bar10}

1.7 Mohs Hardness

7-7.52.5

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.

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Rubellite and Charlesite Chemical Formula

While comparing Rubellite and Charlesite 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 Charlesite 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 Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Compare Blue Gemstones

Rubellite Vs Shattuckite

Rubellite Vs Scorzalite

Rubellite Vs Serendibite

Rubellite and Charlesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 1.79 whereas that of Charlesite is 1.79.