Opal and Londonite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.34
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Mohs Hardness
5-6.5
Not Available
Chemical Composition
SiO2 · nH2O
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Opal and Londonite Chemical Formula
While comparing Opal and Londonite 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 Londonite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Opal and Londonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Londonite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.34 whereas that of Londonite is 3.34.