Nephrite and Boracite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.90-3.10
2.95-2.96
Fracture
Splintery, Granular, Splintery, Granular, Gemstones (2009)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Not Available
None
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Nephrite and Boracite Chemical Formula
While comparing Nephrite and Boracite 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 Nephrite and Boracite chemical formula.
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Nephrite and Boracite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nephrite and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Boracite Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 2.95-2.96 whereas that of Boracite is 2.95-2.96.