Biotite and Dioptase Physical Properties
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.7-3.3
3.25-3.35
Fracture
Uneven, Even, Yellow, White
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Perfect on the {001}
Perfect in three directions
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Dioptase Chemical Formula
While comparing Biotite and Dioptase 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 Biotite and Dioptase chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Biotite and Dioptase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Biotite is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.