Diaspore and Pearl Physical Properties
Tenacity
Very brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.30-3.40
  
2.60-2.85
  
Fracture
Conchoidal, Brittle, Conchoidal
  
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
  
Cleavage
{010} perfect, {110} distinct, {100} in traces
  
none
  
Mohs Hardness
6.5-7
  
2.5-4.5
  
Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
  
Not Available
  
Diaspore and Pearl Chemical Formula
While comparing Diaspore and Pearl 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 Diaspore and Pearl chemical formula.
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
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Diaspore and Pearl Specific Gravity
Another important criteria for qualitative analysis of gemstones is Diaspore and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Pearl Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 2.60-2.85 whereas that of Pearl is 2.60-2.85.