Willemite and Ruby Physical Properties

Willemite

Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.89-4.183.97-4.05

1 7.18

2.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Conchoidal

2.6 Cleavage

{0001}, {11 2 0} imperfect

No true cleavage

2.7 Mohs Hardness

5.59

2 10

2.11 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Al ₂ O ₃

Willemite and Ruby Chemical Formula

While comparing Willemite and Ruby 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 Willemite and Ruby chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Ruby- Al ₂ O ₃

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Willemite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Willemite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.