Tanzanite and Ruby Physical Properties

Tanzanite

Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.353.97-4.05

1 7.18

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Conchoidal

1.6 Cleavage

Perfect {010}, imperfect {100}

No true cleavage

1.7 Mohs Hardness

6.5-79

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Al ₂ O ₃

Tanzanite and Ruby Chemical Formula

While comparing Tanzanite 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 Tanzanite and Ruby chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Ruby- Al ₂ O ₃

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Tanzanite and Ruby Specific Gravity

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