Onyx and Natrolite Physical Properties

Onyx

Natrolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.20-2.26

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

Indiscernible

Perfect on {110}

1.7 Mohs Hardness

6.5-75-5.5

2 10

1.8 Chemical Composition

SiO₂

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Onyx and Natrolite Chemical Formula

While comparing Onyx and Natrolite 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 Natrolite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Onyx and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.