Fire Opal and Gedrite Physical Properties
Specific Gravity
1.97-2.22
3.15-3.259
Cleavage
None
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
6-6.5
5.5-6
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Fire Opal and Gedrite Chemical Formula
While comparing Fire Opal and Gedrite 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 Gedrite chemical formula.
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Fire Opal and Gedrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fire Opal and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.