Fire Opal and Apophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
2.30-2.50
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Not Available
Perfect on (001)
Mohs Hardness
6-6.5
4.5-5
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Fire Opal and Apophyllite Chemical Formula
While comparing Fire Opal and Apophyllite 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 Fire Opal and Apophyllite chemical formula.
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Fire Opal and Apophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fire Opal and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.