Periclase and Iolite Physical Properties

Periclase

Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.92.6-2.7

1 7.18

1.5 Fracture

Conchoidal, Brittle

Not Available

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

3,1

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Mg₂Al₄Si₅O₁₈

Periclase and Iolite Chemical Formula

While comparing Periclase and Iolite 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 Periclase and Iolite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Periclase and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Periclase and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Iolite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.6-2.7 whereas that of Iolite is 2.6-2.7.