Chalcedony and Diaspore Physical Properties
Tenacity
Not Available
Very brittle
Solubility
Soluble
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
3.30-3.40
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Conchoidal, Brittle, Conchoidal
Cleavage
Absent
{010} perfect, {110} distinct, {100} in traces
Mohs Hardness
6.5-7
6.5-7
Chemical Composition
SiO2
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chalcedony and Diaspore Chemical Formula
While comparing Chalcedony 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 Chalcedony and Diaspore chemical formula.
- Chemical formula of Chalcedony- SiO2
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chalcedony and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcedony and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.