Phenakite and Diaspore Physical Properties
Tenacity
Brittle
Very brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
3.30-3.40
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
Conchoidal, Brittle, Conchoidal
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
{010} perfect, {110} distinct, {100} in traces
Mohs Hardness
7.5-8
6.5-7
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Phenakite and Diaspore Chemical Formula
While comparing Phenakite and Diaspore 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 Phenakite and Diaspore chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Phenakite and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.