Charoite and White Opal Physical Properties
Specific Gravity
2.54-2.78
1.98-2.50
Fracture
Conchoidal
Conchoidal
Cleavage
Good in three directions
None
Mohs Hardness
5-6
5.5-6.5
Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Charoite and White Opal Chemical Formula
While comparing Charoite and White 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 Charoite and White Opal chemical formula.
- Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of White Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Charoite and White Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Charoite and White Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and White Opal Optical Properties during the identification of gemstone. Specific gravity of Charoite is 1.98-2.50 whereas that of White Opal is 1.98-2.50.