Topaz and Orthoclase Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.54-2.61
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Gems, Uneven
Cleavage
[001] Perfect
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
Chemical Composition
Al2SiO4(F,OH)2
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Orthoclase Chemical Formula
While comparing Topaz and Orthoclase 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 Topaz and Orthoclase chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Orthoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Orthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Orthoclase Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.54-2.61 whereas that of Orthoclase is 2.54-2.61.