Ruby and Lepidolite Physical Properties

Ruby

Lepidolite

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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

3.97-4.052.80-2.90

1 7.18

1.5 Fracture

Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

No true cleavage

{001} perfect

1.7 Mohs Hardness

92.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

Ruby and Lepidolite Chemical Formula

While comparing Ruby and Lepidolite 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 Lepidolite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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Ruby and Lepidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.