Chrysoprase and Achroite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.58-2.64
2.90-3.40
Fracture
Gems, Sixth Edition (2006)
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None
Not Available
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
SiO2 (with a high level of nickel impurities )
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.
Chrysoprase and Achroite Chemical Formula
While comparing Chrysoprase and Achroite 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 Chrysoprase and Achroite chemical formula.
- Chemical formula of Chrysoprase- SiO2 (with a high level of nickel impurities )
- 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.
Chrysoprase and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysoprase and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoprase and Achroite Optical Properties during the identification of gemstone. Specific gravity of Chrysoprase is 2.90-3.40 whereas that of Achroite is 2.90-3.40.