Agate and Aragonite Physical Properties

Agate

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.64

2.93-2.96

1.5 Fracture

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

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

1.6 Cleavage

Indiscernible

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

1.7 Mohs Hardness

6.5-7

3.5-4

1.8 Chemical Composition

SiO₂

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

Agate and Aragonite Chemical Formula

While comparing Agate 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 Agate and Aragonite chemical formula.

Chemical formula of Agate- SiO₂
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Agate and Aragonite Specific Gravity

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