Friedelite and Common Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06-3.19
1.98-2.50
Fracture
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
{010} Perfect
Not Available
Mohs Hardness
4-5
5.5-6.5
Chemical Composition
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Friedelite and Common Opal Chemical Formula
While comparing Friedelite and Common 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 Friedelite and Common Opal chemical formula.
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Friedelite and Common Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Friedelite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.