Tanzanite and Star Ruby Physical Properties

Tanzanite

Star Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

3.95-4.10

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect {010}, imperfect {100}

Not Available

1.7 Mohs Hardness

6.5-7

Not Available

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Tanzanite and Star Ruby Chemical Formula

While comparing Tanzanite and Star 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 Star Ruby chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Semi Precious Gemstones

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Tanzanite and Star Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.