Iolite and Triplite Physical Properties

Iolite

Triplite

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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

2.6-2.73.85-3.94

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

3,1

{010} Good, {100} Distinct

1.7 Mohs Hardness

7-7.55-5.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

Iolite and Triplite Chemical Formula

While comparing Iolite and Triplite 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 Triplite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Triplite- (Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

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Iolite and Triplite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Triplite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Triplite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.85-3.94 whereas that of Triplite is 3.85-3.94.