Nickeline and Precious Opal Physical Properties

Nickeline

Precious Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available1.98-2.25

1 7.18

1.5 Fracture

Conchoidal, Uneven

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references

1.6 Cleavage

{1010} Imperfect, {0001} Imperfect

Not Available

1.7 Mohs Hardness

5-5.55-6.5

2 10

1.8 Chemical Composition

Not Available

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Nickeline and Precious Opal Chemical Formula

While comparing Nickeline and Precious Opal 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 Nickeline and Precious Opal chemical formula.

Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

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Nickeline and Precious Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nickeline and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nickeline and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Nickeline is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.