Brookite and Nephrite Physical Properties
Specific Gravity
3.87-4.14
2.90-3.10
Fracture
Subconchoidal, Conchoidal
Splintery, Granular
Cleavage
Poor on {120}, in traces on {001}
None
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Brookite and Nephrite Chemical Formula
While comparing Brookite and Nephrite 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 Brookite and Nephrite chemical formula.
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Brookite and Nephrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brookite and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.