Oligoclase and Emerald Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Hard
Specific Gravity
2.62-2.67
2.67-2.78
Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
From the Greek, oligos and kasein, little cleavage.
Imperfect on the [0001]
Mohs Hardness
6-6.5
7.5-8
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Be3Al2SiO6
Oligoclase and Emerald Chemical Formula
While comparing Oligoclase and Emerald 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 Oligoclase and Emerald chemical formula.
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Emerald- Be3Al2SiO6
Oligoclase and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Oligoclase and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Emerald Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 2.67-2.78 whereas that of Emerald is 2.67-2.78.