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Common Opal
Common Opal

Albite
Albite



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Common Opal
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Albite

Common Opal and Albite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

1.98-2.502.60-2.65
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Conchoidal

Cleavage

None
Perfect on {001}, very good on {010}, imperfect on {110}

Mohs Hardness

5.5-6.56-6.5
2 10
👆🏻

Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
NaAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Common Opal and Albite Chemical Formula

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

  • Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Albite- NaAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Common Opal and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Common Opal and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Albite Optical Properties during the identification of gemstone. Specific gravity of Common Opal is 2.60-2.65 whereas that of Albite is 2.60-2.65.