Rhodolite and Onyx Physical Properties

Rhodolite

Onyx

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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

3.842.55-2.70

1 7.18

1.5 Fracture

Conchoidal

Not Available

1.6 Cleavage

none, may show indistinct parting

Indiscernible

1.7 Mohs Hardness

7-7.56.5-7

2 10

1.8 Chemical Composition

(Mg,Fe)₃Al₂Si₃O₁₂

SiO₂

Rhodolite and Onyx Chemical Formula

While comparing Rhodolite and Onyx 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 Rhodolite and Onyx chemical formula.

Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂
Chemical formula of Onyx- SiO₂

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Rhodolite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodolite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodolite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Rhodolite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.