Dolomite and Precious Opal Physical Properties

Dolomite

Precious Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Poorly soluble in dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-2.951.98-2.25

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {10 1 1}, rhombohedral cleavage

Not Available

1.7 Mohs Hardness

3.5-45-6.5

2 10

1.8 Chemical Composition

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Dolomite and Precious Opal Chemical Formula

While comparing Dolomite 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 Dolomite and Precious Opal chemical formula.

Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

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Dolomite and Precious Opal Specific Gravity

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