Grandidierite and Rhodolite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.85-3.00
  
3.84
  
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
  
Conchoidal
  
Cleavage
Perfect
  
none, may show indistinct parting
  
Mohs Hardness
7.5
  
7-7.5
  
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
  
(Mg,Fe)3Al2Si3O12
  
Grandidierite and Rhodolite Chemical Formula
While comparing Grandidierite and Rhodolite 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 Grandidierite and Rhodolite chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Rhodolite- (Mg,Fe)3Al2Si3O12
Grandidierite and Rhodolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.84 whereas that of Rhodolite is 3.84.