Carnelian and Grandidierite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.58-2.64
  
2.85-3.00
  
Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
  
Cleavage
Absent
  
Perfect
  
Mohs Hardness
6.5-7
  
7.5
  
Chemical Composition
SiO2
  
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
  
Carnelian and Grandidierite Chemical Formula
While comparing Carnelian and Grandidierite 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 Carnelian and Grandidierite chemical formula.
- Chemical formula of Carnelian- SiO2
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Carnelian and Grandidierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carnelian and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.