Proustite and Common Opal Physical Properties

Proustite

Common Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.51-5.641.98-2.50

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Distinct on {10 1 1}

Not Available

1.7 Mohs Hardness

2.55.5-6.5

2 10

1.8 Chemical Composition

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

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

Proustite and Common Opal Chemical Formula

While comparing Proustite 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 Proustite and Common Opal chemical formula.

Chemical formula of Proustite- Ag 3AsS 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)

Compare Black Gemstones

Proustite Vs Schorlomite

Proustite Vs Sheen Obsidian

Proustite Vs Serendibite

Proustite and Common Opal Specific Gravity

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