Piemontite and Ruby Physical Properties

Piemontite

Ruby

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.97-4.05

1 7.18

1.5 Fracture

Uneven, Splintery

Conchoidal

1.6 Cleavage

[001] good, [100] distinct

No true cleavage

1.7 Mohs Hardness

6-6.59

2 10

1.8 Chemical Composition

Not Available

Al ₂ O ₃

Piemontite and Ruby Chemical Formula

While comparing Piemontite 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 Piemontite and Ruby chemical formula.

Chemical formula of Ruby- Al ₂ O ₃

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Piemontite and Ruby Specific Gravity

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