Epidote and Iolite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-3.50
2.6-2.7
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Fibrous
Not Available
Cleavage
{001} perfect and {100} imperfect
3,1
Chemical Composition
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Epidote and Iolite Chemical Formula
While comparing Epidote and Iolite 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 Epidote and Iolite chemical formula.
- Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Iolite- Mg2Al4Si5O18
Epidote and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Epidote and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Epidote and Iolite Optical Properties during the identification of gemstone. Specific gravity of Epidote is 2.6-2.7 whereas that of Iolite is 2.6-2.7.