Rubellite and Andradite Physical Properties

Rubellite

Andradite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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.

Brittle

3.70-4.10

Conchoidal, Uneven

none

6.5-7

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Rubellite and Andradite Chemical Formula

While comparing Rubellite and Andradite 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 Andradite chemical formula.

Compare Blue Gemstones

Rubellite Vs Serendibite

Rubellite Vs Shattuckite

Rubellite Vs Sillimanite

Rubellite and Andradite Specific Gravity

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