Grandidierite and Boulder Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
1.98-2.25
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Perfect
Not Available
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
SiO 2 + H 2OUlrich Henn and Claudio C.
Grandidierite and Boulder Opal Chemical Formula
While comparing Grandidierite 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 Grandidierite and Boulder Opal chemical formula.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
- Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Grandidierite and Boulder Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grandidierite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.