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Rubellite
Rubellite

Cryolite
Cryolite



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Rubellite
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Cryolite

Rubellite and Cryolite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.01-3.062.97
1 7.18
👆🏻

Fracture

Conchoidal
Uneven

Cleavage

Indiscernible
None observed

Mohs Hardness

7-7.52.5
2 10
👆🏻

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.
Na 3AlF 6Ulrich Henn and Claudio C.

Rubellite and Cryolite Chemical Formula

While comparing Rubellite and Cryolite 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 Cryolite 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 Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.

Rubellite and Cryolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.97 whereas that of Cryolite is 2.97.