Witherite and Common Opal Physical Properties

Witherite

Common Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.27-4.351.98-2.50

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

{010} Distinct

Not Available

1.7 Mohs Hardness

3-3.55.5-6.5

2 10

1.8 Chemical Composition

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

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

Witherite and Common Opal Chemical Formula

While comparing Witherite and Common Opal 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 Witherite and Common Opal chemical formula.

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

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Witherite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Witherite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Witherite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Witherite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.