Achroite and Serendibite Physical Properties
Specific Gravity
2.90-3.40
3.43-3.44
Fracture
Uneven, ConchoidalWalter Schumann
-
Cleavage
Indiscernible
None Observed
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Achroite and Serendibite Chemical Formula
While comparing Achroite and Serendibite 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 Achroite and Serendibite chemical formula.
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Serendibite- Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Achroite and Serendibite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Serendibite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Serendibite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.43-3.44 whereas that of Serendibite is 3.43-3.44.