Alexandrite and Pollucite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Readily soluble in HF
Durability
Not Available
Not Available
Specific Gravity
3.69-3.81
2.86-2.94
Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
1,1 ; 3,2.
None observed
Chemical Composition
BeAl 2 O 4
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Alexandrite and Pollucite Chemical Formula
While comparing Alexandrite and Pollucite 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 Alexandrite and Pollucite chemical formula.
- Chemical formula of Alexandrite- BeAl 2 O 4
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Alexandrite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alexandrite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.