Nickeline and Rubellite Physical Properties

Nickeline

Rubellite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.01-3.06

1 7.18

1.5 Fracture

Conchoidal, Uneven

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{1010} Imperfect, {0001} Imperfect

Not Available

1.7 Mohs Hardness

5-5.57-7.5

2 10

1.8 Chemical Composition

Not Available

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.

Nickeline and Rubellite Chemical Formula

While comparing Nickeline 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 Nickeline and Rubellite 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.

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Nickeline and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nickeline and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nickeline and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Nickeline is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.