Faustite and Star Ruby Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.9
3.95-4.10
Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
{???} Indistinct
Not Available
Mohs Hardness
4.5
Not Available
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Faustite and Star Ruby Chemical Formula
While comparing Faustite and Star Ruby 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 Faustite and Star Ruby chemical formula.
- Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Faustite and Star Ruby Specific Gravity
Another important criteria for qualitative analysis of gemstones is Faustite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.