Bertrandite and Opal Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
2.59-2.60
1.98-2.25
Fracture
Brittle, Metallic, Brittle, Metallic
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
None
Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
SiO2 · nH2O
Bertrandite and Opal Chemical Formula
While comparing Bertrandite 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 Bertrandite and Opal chemical formula.
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Opal- SiO2 · nH2O
Bertrandite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bertrandite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Opal Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 1.98-2.25 whereas that of Opal is 1.98-2.25.