Grandidierite and Gyrolite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.85-3.00
  
2.48
  
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
  
Brittle, Uneven, Brittle, Uneven
  
Cleavage
Perfect
  
Perfect on {001}
  
Mohs Hardness
7.5
  
2
  
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
  
NaCa16Si23AlO60(OH)8•64(H2O)
  
Grandidierite and Gyrolite Chemical Formula
While comparing Grandidierite and Gyrolite 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 Gyrolite chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Gyrolite- NaCa16Si23AlO60(OH)8•64(H2O)
Grandidierite and Gyrolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Gyrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Gyrolite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 2.48 whereas that of Gyrolite is 2.48.