Iolite and Childrenite Physical Properties

Iolite

Childrenite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.73.06-3.25

1 7.18

1.5 Fracture

Not Available

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

3,1

Poor/indistinct on {100}

1.7 Mohs Hardness

7-7.54.5-5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Iolite and Childrenite Chemical Formula

While comparing Iolite and Childrenite 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 Childrenite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

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Iolite and Childrenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.