Oligoclase and Amethyst Physical Properties

Oligoclase

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.672.65

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

From the Greek, oligos and kasein, little cleavage.

Indiscernible

1.7 Mohs Hardness

6-6.57

2 10

1.8 Chemical Composition

Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO₂

Oligoclase and Amethyst Chemical Formula

While comparing Oligoclase and Amethyst 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 Amethyst 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 Amethyst- SiO₂

Compare Colorless Gems

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Oligoclase Vs Pezzottaite

Oligoclase and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 2.65 whereas that of Amethyst is 2.65.