Opal and Esperite Physical Properties
Tenacity
BrittleWalter Schumann
Not Available
Solubility
hot salt water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
4.28-4.42
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
None
Distinct on [010] and [100] poor on [101]
Mohs Hardness
5-6.5
5-5.5
Chemical Composition
SiO2 · nH2O
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Opal and Esperite Chemical Formula
While comparing Opal and Esperite 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 Esperite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Opal and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Esperite Optical Properties during the identification of gemstone. Specific gravity of Opal is 4.28-4.42 whereas that of Esperite is 4.28-4.42.