Opal and Nosean Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
2.30-2.40
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
None
{110} Perfect
Mohs Hardness
5-6.5
Not Available
Chemical Composition
SiO2 · nH2O
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Opal and Nosean Chemical Formula
While comparing Opal and Nosean 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 Opal and Nosean chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Opal and Nosean Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Nosean Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.30-2.40 whereas that of Nosean is 2.30-2.40.