Onyx and Papagoite Physical Properties

Onyx

Papagoite

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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

2.55-2.703.25

1 7.18

1.5 Fracture

Not Available

Brittle, Metallic

1.6 Cleavage

Indiscernible

Imperfect in one direction

1.7 Mohs Hardness

6.5-75-5.5

2 10

1.8 Chemical Composition

SiO₂

CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Onyx and Papagoite Chemical Formula

While comparing Onyx and Papagoite 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 Papagoite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Papagoite- CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Onyx and Papagoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Papagoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Papagoite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.25 whereas that of Papagoite is 3.25.