Topaz and Aragonite Physical Properties

Topaz

Aragonite

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Physical Properties

Tenacity

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

3.49-3.572.93-2.96

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal

Subconchoidal, Conchoidal

Cleavage

[001] Perfect

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

Mohs Hardness

83.5-4

2 10

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Chemical Composition

Al₂SiO₄(F,OH)₂

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

Topaz and Aragonite Chemical Formula

While comparing Topaz 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 Topaz and Aragonite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Sagittarius

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Topaz Vs Pietersite

Topaz Vs Quartz Smoky

Topaz and Aragonite Specific Gravity

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