Smithsonite and Boulder Opal Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.00-4.65
1.98-2.25
Fracture
Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect on [1011]
Not Available
Mohs Hardness
5-5.5
5-6.5
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 + H 2OUlrich Henn and Claudio C.
Smithsonite and Boulder Opal Chemical Formula
While comparing Smithsonite and Boulder 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 Smithsonite and Boulder Opal chemical formula.
- Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Smithsonite and Boulder Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Smithsonite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smithsonite and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Smithsonite is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.