Onyx and Kornerupine Physical Properties

Onyx

Kornerupine

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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

2.55-2.703.25-3.45

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Indiscernible

Good on {110}

1.7 Mohs Hardness

6.5-76.5

2 10

1.8 Chemical Composition

SiO₂

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Onyx and Kornerupine Chemical Formula

While comparing Onyx and Kornerupine 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 Kornerupine chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Onyx and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.