Peridot and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.54-1.55
  
3.49-3.57
  
Fracture
Conchoidal
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Poor
  
[001] Perfect
  
Mohs Hardness
6.5-7
  
8
  
Chemical Composition
(Mg,Fe)2SiO4
  
Al2SiO4(F,OH)2
  
Peridot and Topaz Chemical Formula
While comparing Peridot and Topaz 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 Peridot and Topaz chemical formula.
- Chemical formula of Peridot- (Mg,Fe)2SiO4
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Peridot and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Peridot and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Topaz Optical Properties during the identification of gemstone. Specific gravity of Peridot is 3.49-3.57 whereas that of Topaz is 3.49-3.57.