Montebrasite and Rubellite Physical Properties

Montebrasite

Rubellite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.98-3.10

Uneven, Conchoidal

{100} Perfect, {110} Good, {011} Distinct

5.5-6

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

3.01-3.06

Conchoidal

Indiscernible

7-7.5

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.

Montebrasite and Rubellite Chemical Formula

While comparing Montebrasite and Rubellite 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 Montebrasite and Rubellite chemical formula.

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Montebrasite and Rubellite Specific Gravity

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