Chrome Tourmaline and Onyx Physical Properties

Chrome Tourmaline

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

2.85-3.352.55-2.70

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

3,2

Indiscernible

1.7 Mohs Hardness

7-7.56.5-7

2 10

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas.

SiO₂

Chrome Tourmaline and Onyx Chemical Formula

While comparing Chrome Tourmaline 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 Chrome Tourmaline and Onyx chemical formula.

Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.
Chemical formula of Onyx- SiO₂

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Chrome Tourmaline and Onyx Specific Gravity

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