Precious Opal and Magnesite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Effervesces in hot HCl
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.92-3.12
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
Not Available
[10 1 1] perfect
Mohs Hardness
5-6.5
3.5-4.5
Chemical Composition
SiO 2 · nH 2OGemdat.org , Management Team (2012)
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Precious Opal and Magnesite Chemical Formula
While comparing Precious Opal and Magnesite 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 Magnesite chemical formula.
- Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
- Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Precious Opal and Magnesite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Precious Opal and Magnesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Magnesite Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 2.92-3.12 whereas that of Magnesite is 2.92-3.12.