Riesling Beryl and Petalite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.66-2.86
2.40
Fracture
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Cleavage
Not Available
Perfect on {001}, poor on {201} with 38.5° angle between the two
Mohs Hardness
7.5-8
6-6.5
Chemical Composition
Al 2Be 3Si 6O 18Martin H.
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Riesling Beryl and Petalite Chemical Formula
While comparing Riesling Beryl and Petalite 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 Riesling Beryl and Petalite chemical formula.
- Chemical formula of Riesling Beryl- Al 2Be 3Si 6O 18Martin H.
- Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Riesling Beryl and Petalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riesling Beryl and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riesling Beryl and Petalite Optical Properties during the identification of gemstone. Specific gravity of Riesling Beryl is 2.40 whereas that of Petalite is 2.40.