Tanzanite and Oligoclase Physical Properties

Tanzanite

Oligoclase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.352.62-2.67

1 7.18

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Perfect {010}, imperfect {100}

From the Greek, oligos and kasein, little cleavage.

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

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

Tanzanite and Oligoclase Chemical Formula

While comparing Tanzanite 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 Tanzanite and Oligoclase chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Tanzanite and Oligoclase Specific Gravity

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