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Rubellite
Rubellite

Langbeinite
Langbeinite



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Rubellite
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Langbeinite

Rubellite and Langbeinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Slowly dissolves in water

Durability

-
-

Specific Gravity

3.01-3.06-9999
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Indiscernible
None

Mohs Hardness

7-7.53.5-4
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.
K2Mg2(SO4)3

Rubellite and Langbeinite Chemical Formula

While comparing Rubellite and Langbeinite 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 Langbeinite 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 Langbeinite- K2Mg2(SO4)3

Rubellite and Langbeinite Specific Gravity

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