Iolite and Phenakite Physical Properties

Iolite

Phenakite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.72.90-2.98

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

3,1

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

7-7.57.5-8

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Phenakite Chemical Formula

While comparing Iolite and Phenakite 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 Iolite and Phenakite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.