Ajoite and Opal Physical Properties

Ajoite

Opal

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1 Physical Properties

1.1 Tenacity

Not Available

BrittleWalter Schumann

1.2 Solubility

Decomposed by acids

hot salt water

1.3 Durability

Not Available

1.4 Specific Gravity

2.961.98-2.25

1 7.18

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

Perfect on {010}

None

1.7 Mohs Hardness

55-6.5

2 10

1.8 Chemical Composition

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

SiO₂ · nH₂O

Ajoite and Opal Chemical Formula

While comparing Ajoite and 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 Opal chemical formula.

Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)
Chemical formula of Opal- SiO₂ · nH₂O

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Ajoite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ajoite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ajoite and Opal Optical Properties during the identification of gemstone. Specific gravity of Ajoite is 1.98-2.25 whereas that of Opal is 1.98-2.25.