Grandidierite and Rock Crystal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
2.65
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Perfect
Not Available
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
SiO 2Walter Schumann , Gemstones of the world (2001)
Grandidierite and Rock Crystal Chemical Formula
While comparing Grandidierite and Rock Crystal 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 Rock Crystal chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Grandidierite and Rock Crystal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 2.65 whereas that of Rock Crystal is 2.65.