Chrysoprase and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.58-2.64
3.2-3.4
Fracture
Gems, Sixth Edition (2006)
Uneven, Brittle, Metallic
Cleavage
None
Perfect on [001] imperfect on [100]
Chemical Composition
SiO2 (with a high level of nickel impurities )
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Chrysoprase and Astrophyllite Chemical Formula
While comparing Chrysoprase and Astrophyllite 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 Astrophyllite chemical formula.
- Chemical formula of Chrysoprase- SiO2 (with a high level of nickel impurities )
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Chrysoprase and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysoprase and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoprase and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Chrysoprase is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.