Umbalite and Amethyst Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble in common solvents
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
2.65
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Not Available
Indiscernible
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
SiO2
Umbalite and Amethyst Chemical Formula
While comparing Umbalite and Amethyst 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 Amethyst 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 Amethyst- SiO2
Umbalite and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.65 whereas that of Amethyst is 2.65.