Umbalite and Chalcedony Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
2.55-2.70
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Cleavage
Not Available
Absent
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
SiO2
Umbalite and Chalcedony Chemical Formula
While comparing Umbalite and Chalcedony 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 Umbalite and Chalcedony chemical formula.
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
- Chemical formula of Chalcedony- SiO2
Umbalite and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.