Pleonaste and Chrome-Chalcedony Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
3.80
  
2.55-2.70
  
Fracture
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Cleavage
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Mohs Hardness
8
  
6.5-7
  
Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
  
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
  
Pleonaste and Chrome-Chalcedony Chemical Formula
While comparing Pleonaste and Chrome-Chalcedony 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 Pleonaste and Chrome-Chalcedony chemical formula.
- Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Pleonaste and Chrome-Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pleonaste and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pleonaste and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Pleonaste is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.