Melanite and Opal Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.70-4.10
1.98-2.25
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Not Available
None
Mohs Hardness
6.5-7
5-6.5
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
SiO2 · nH2O
Melanite and Opal Chemical Formula
While comparing Melanite and 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 Melanite and Opal chemical formula.
- Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Opal- SiO2 · nH2O
Melanite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Melanite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Melanite and Opal Optical Properties during the identification of gemstone. Specific gravity of Melanite is 1.98-2.25 whereas that of Opal is 1.98-2.25.