Opal and Ajoite Physical Properties

Opal

Ajoite

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1 Physical Properties

1.1 Tenacity

BrittleWalter Schumann

Not Available

1.2 Solubility

hot salt water

Decomposed by acids

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.252.96

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

Perfect on {010}

1.7 Mohs Hardness

5-6.55

2 10

1.8 Chemical Composition

SiO₂ · nH₂O

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Opal and Ajoite Chemical Formula

While comparing Opal and Ajoite 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 Opal and Ajoite chemical formula.

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

Compare Semi Precious Gemstones

Opal Vs Alexandrite

Opal Vs Lehsunia

Opal Vs Amethyst

Opal and Ajoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.96 whereas that of Ajoite is 2.96.