Precious Opal and Hibschite Physical Properties

Precious Opal

Hibschite

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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

1.98-2.253.05-3.08

1 7.18

1.5 Fracture

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

Uneven, Uneven, Irregular, Management Team (2012), Conchoidal, Brittle

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

5-6.56.5

2 10

1.8 Chemical Composition

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

Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

Precious Opal and Hibschite Chemical Formula

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

Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
Chemical formula of Hibschite- Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

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Precious Opal Vs Sapphire

Precious Opal Vs Sardonyx

Precious Opal and Hibschite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious Opal and Hibschite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Hibschite Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 3.05-3.08 whereas that of Hibschite is 3.05-3.08.