Wardite and Onyx Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.81
2.55-2.70
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
{001} Perfect
Indiscernible
Mohs Hardness
4.5-5
6.5-7
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2
Wardite and Onyx Chemical Formula
While comparing Wardite and Onyx 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 Wardite and Onyx chemical formula.
- Chemical formula of Wardite- NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Onyx- SiO2
Wardite and Onyx Specific Gravity
Another important criteria for qualitative analysis of gemstones is Wardite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wardite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Wardite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.