Peridot and Oligoclase Physical Properties

Peridot

Oligoclase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.552.62-2.67

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

Poor

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

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

Peridot and Oligoclase Chemical Formula

While comparing Peridot and Oligoclase 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 Peridot and Oligoclase chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Peridot and Oligoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.