Almandine and Sardonyx Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.30
2.55-2.70
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Not Available
Cleavage
none
Not Available
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
SiO 2Ulrich Henn and Claudio C.
Almandine and Sardonyx Chemical Formula
While comparing Almandine and Sardonyx 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 Almandine and Sardonyx chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.
Almandine and Sardonyx Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Sardonyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Sardonyx Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.55-2.70 whereas that of Sardonyx is 2.55-2.70.