Onyx and Glaucophane Physical Properties

Onyx

Glaucophane

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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

2.55-2.703-3.15

1 7.18

1.5 Fracture

Not Available

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Indiscernible

Good on [110] and on [001]

1.7 Mohs Hardness

6.5-76.0-6.5

2 10

1.8 Chemical Composition

SiO₂

[ ]Na2(Mg3Al2)Si8O22(OH)2

Onyx and Glaucophane Chemical Formula

While comparing Onyx and Glaucophane 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 Onyx and Glaucophane chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

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Onyx and Glaucophane Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Glaucophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Glaucophane Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3-3.15 whereas that of Glaucophane is 3-3.15.