Norbergite and Crystal Opal Physical Properties

Norbergite

Crystal Opal

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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

3.1771.97-2.22

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{???} Distinct

Not Available

1.7 Mohs Hardness

6-6.55.5-6.5

2 10

1.8 Chemical Composition

Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

SiO 2 + H 2OUlrich Henn and Claudio C.

Norbergite and Crystal Opal Chemical Formula

While comparing Norbergite and Crystal 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 Norbergite and Crystal Opal chemical formula.

Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Yellow Gemstones

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Norbergite Vs Prase Opal

Norbergite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Norbergite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Norbergite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Norbergite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.