Ulexite and Amethyst Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble in common solvents
Durability
Not Available
Not Available
Specific Gravity
1.65-1.99
2.65
Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
{010} Perfect, {110} Perfect
Indiscernible
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
SiO2
Ulexite and Amethyst Chemical Formula
While comparing Ulexite 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 Ulexite and Amethyst chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Amethyst- SiO2
Ulexite and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.65 whereas that of Amethyst is 2.65.