Ruby and Pollucite Physical Properties

Ruby

Pollucite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.86-2.94

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

No true cleavage

None observed

1.7 Mohs Hardness

96.5-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Ruby and Pollucite Chemical Formula

While comparing Ruby and Pollucite 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 Pollucite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Ruby and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.