Apophyllite and Fire Opal Physical Properties

Apophyllite and Fire Opal Chemical Formula

While comparing Apophyllite and Fire Opal 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 Apophyllite and Fire Opal chemical formula.

• Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
• Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Apophyllite and Fire Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apophyllite and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.