Ruby and Pargasite Physical Properties

Ruby

Pargasite

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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

3.97-4.053.04-3.26

1 7.18

1.5 Fracture

Conchoidal

Splintery, Brittle, Uneven

1.6 Cleavage

No true cleavage

{110} perfect

1.7 Mohs Hardness

95-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Ruby and Pargasite Chemical Formula

While comparing Ruby and Pargasite 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 Ruby and Pargasite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Ruby and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.