Star Sapphire and Ulexite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
1.65-1.99
Fracture
Not Available
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
Cleavage
Not Available
{010} Perfect, {110} Perfect
Mohs Hardness
Not Available
2-2.5
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Star Sapphire and Ulexite Chemical Formula
While comparing Star Sapphire and Ulexite 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 Star Sapphire and Ulexite chemical formula.
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Star Sapphire and Ulexite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Sapphire and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.