Realgar and Grandidierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.56
2.85-3.00
Fracture
(e.g. graphite).
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
{010} Good
Perfect
Mohs Hardness
Not Available
7.5
Chemical Composition
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Realgar and Grandidierite Chemical Formula
While comparing Realgar 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 Realgar and Grandidierite chemical formula.
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Realgar and Grandidierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Realgar and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Realgar is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.