Allanite and Hiddenite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.40-4.20
  
3.15-3.21
  
Fracture
Not Available
  
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Not Available
  
1,2 prismatic
  
Mohs Hardness
Not Available
  
6-7
  
Chemical Composition
Not Available
  
LiAlSi2O6
  
Allanite and Hiddenite Chemical Formula
While comparing Allanite and Hiddenite 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 Allanite and Hiddenite chemical formula.
>- Chemical formula of Hiddenite- LiAlSi2O6
Allanite and Hiddenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Allanite and Hiddenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Allanite and Hiddenite Optical Properties during the identification of gemstone. Specific gravity of Allanite is 3.15-3.21 whereas that of Hiddenite is 3.15-3.21.