Colemanite and Alexandrite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.40-2.42
3.69-3.81
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Not Available
Cleavage
{010} Perfect, {001} Distinct
1,1 ; 3,2.
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAl 2 O 4
Colemanite and Alexandrite Chemical Formula
While comparing Colemanite and Alexandrite 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 Colemanite and Alexandrite chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Alexandrite- BeAl 2 O 4
Colemanite and Alexandrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.