Glaucophane and Common Opal Physical Properties

Glaucophane

Common Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3-3.151.98-2.50

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Good on [110] and on [001]

Not Available

1.7 Mohs Hardness

6.0-6.55.5-6.5

2 10

1.8 Chemical Composition

[ ]Na2(Mg3Al2)Si8O22(OH)2

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

Glaucophane and Common Opal Chemical Formula

While comparing Glaucophane 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 Glaucophane and Common Opal chemical formula.

Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Blue Gemstones

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Glaucophane Vs Riebeckite

Glaucophane and Common Opal Specific Gravity

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