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Malachite
Malachite

Precious Opal
Precious Opal



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Malachite
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Precious Opal

Malachite and Precious Opal Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.25-4.101.98-2.25
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
1.6 Cleavage
Perfect on { 2 01} fair on {010}
Not Available
1.7 Mohs Hardness
3.5-45-6.5
Amber
2 10
1.8 Chemical Composition
Cu2CO3(OH)2
SiO 2 · nH 2OGemdat.org , Management Team (2012)

Malachite and Precious Opal Chemical Formula

While comparing Malachite 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 Malachite and Precious Opal chemical formula.

  • Chemical formula of Malachite- Cu2CO3(OH)2
  • Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Malachite and Precious Opal Specific Gravity

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