Creedite and Star Ruby Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.70
3.95-4.10
Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Perfect on {100}
Not Available
Mohs Hardness
4.5
Not Available
Chemical Composition
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Creedite and Star Ruby Chemical Formula
While comparing Creedite 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 Creedite and Star Ruby chemical formula.
- Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Creedite and Star Ruby Specific Gravity
Another important criteria for qualitative analysis of gemstones is Creedite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Creedite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Creedite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.