Chromite and Precious Opal Physical Properties

Chromite

Precious Opal

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.81.98-2.25

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

None, parting may develop along {111}

Not Available

1.7 Mohs Hardness

5.55-6.5

2 10

1.8 Chemical Composition

Fe++Cr2O4

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

Chromite and Precious Opal Chemical Formula

While comparing Chromite 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 Chromite and Precious Opal chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Compare Brown Gemstones

Chromite Vs Radiolarite

Chromite Vs Kutnohorite

Chromite Vs Kainite

Chromite and Precious Opal Specific Gravity

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