Rhodolite and Sillimanite Physical Properties
Tenacity
Not Available
  
Tough
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.84
  
3.20-3.26
  
Fracture
Conchoidal
  
Splintery
  
Cleavage
none, may show indistinct parting
  
{010} perfect
  
Mohs Hardness
7-7.5
  
6-7.5
  
Chemical Composition
(Mg,Fe)3Al2Si3O12
  
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Rhodolite and Sillimanite Chemical Formula
While comparing Rhodolite and Sillimanite 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 Rhodolite and Sillimanite chemical formula.
- Chemical formula of Rhodolite- (Mg,Fe)3Al2Si3O12
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Rhodolite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rhodolite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodolite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Rhodolite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.