Wood Opal and Gahnite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.50
4.00-4.62
Fracture
Not Available
Conchoidal, Uneven
Cleavage
Not Available
Indistinct parting on [111]
Mohs Hardness
5.5-6.5
7.5-8
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Wood Opal and Gahnite Chemical Formula
While comparing Wood Opal and Gahnite 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 Wood Opal and Gahnite chemical formula.
- Chemical formula of Wood Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Wood Opal and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Wood Opal and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wood Opal and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Wood Opal is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.