Dioptase and Alunite Physical Properties
Solubility
Soluble
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.25-3.35
2.6-2.9
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Conchoidal, Uneven
Cleavage
Perfect in three directions
On {0001}, perfect
Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KAl3(SO4)2(OH)6
Dioptase and Alunite Chemical Formula
While comparing Dioptase and Alunite 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 Dioptase and Alunite chemical formula.
- Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Dioptase and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dioptase and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dioptase and Alunite Optical Properties during the identification of gemstone. Specific gravity of Dioptase is 2.6-2.9 whereas that of Alunite is 2.6-2.9.