Andradite and Fire Opal Physical Properties

Andradite and Fire Opal Chemical Formula

While comparing Andradite 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 Andradite and Fire Opal chemical formula.

• Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
• Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Andradite and Fire Opal Specific Gravity

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