Alexandrite and Childrenite Physical Properties

Alexandrite

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

3.69-3.813.06-3.25

1 7.18

1.5 Fracture

Not Available

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

1,1 ; 3,2.

Poor/indistinct on {100}

1.7 Mohs Hardness

8.54.5-5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Childrenite Chemical Formula

While comparing Alexandrite 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 Alexandrite and Childrenite chemical formula.

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

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Alexandrite and Childrenite Specific Gravity

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