Childrenite and Alexandrite Physical Properties

Childrenite

Alexandrite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.06-3.253.69-3.81

1 7.18

1.5 Fracture

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

Not Available

1.6 Cleavage

Poor/indistinct on {100}

1,1 ; 3,2.

1.7 Mohs Hardness

4.5-58.5

2 10

1.8 Chemical Composition

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

BeAl ₂ O ₄

Childrenite and Alexandrite Chemical Formula

While comparing Childrenite and Alexandrite 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 Childrenite and Alexandrite chemical formula.

Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Childrenite and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Childrenite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Childrenite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Childrenite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.