White Opal and Aragonite Physical Properties

White Opal

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

1.98-2.502.93-2.96

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5.5-6.53.5-4

2 10

1.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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

White Opal and Aragonite Chemical Formula

While comparing White Opal 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 White Opal and Aragonite chemical formula.

Chemical formula of White Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

White Opal Vs Idocrase

White Opal Vs Iolite

White Opal Vs Kyanite

White Opal and Aragonite Specific Gravity

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