Ajoite and Common Opal Physical Properties

Ajoite

Common Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Decomposed by acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.961.98-2.50

1 7.18

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Perfect on {010}

Not Available

1.7 Mohs Hardness

55.5-6.5

2 10

1.8 Chemical Composition

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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

Ajoite and Common Opal Chemical Formula

While comparing Ajoite 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 Ajoite and Common Opal chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Ajoite and Common Opal Specific Gravity

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