Tanzanite and Aragonite Physical Properties

Tanzanite

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

2.93-2.96

1.5 Fracture

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

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect {010}, imperfect {100}

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

6.5-7

3.5-4

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Tanzanite and Aragonite Chemical Formula

While comparing Tanzanite and Aragonite 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 Aragonite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Semi Precious Gemstones

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Tanzanite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.