Rubellite and Fluorite Physical Properties

Rubellite

Fluorite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

3.01-3.063.00-3.25

1 7.18

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Fracture

Conchoidal

Subconchoidal, Uneven, ConchoidalWalter Schumann

Cleavage

Indiscernible

Octahedral, perfect on {111}, parting on {011}

Mohs Hardness

7-7.54

2 10

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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.

CaF₂

Rubellite and Fluorite Chemical Formula

While comparing Rubellite and Fluorite 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 Fluorite 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 Fluorite- CaF₂

Compare Blue Gemstones

Rubellite Vs Serendibite

Rubellite Vs Shattuckite

Rubellite Vs Sillimanite

Rubellite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.