Iddingsite and Alexandrite Physical Properties

Iddingsite

Alexandrite

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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

2.5-2.83.69-3.81

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

{???} Perfect

1,1 ; 3,2.

1.7 Mohs Hardness

38.5

2 10

1.8 Chemical Composition

MgO.Fe2O3.3SiO2•4(H2O)

BeAl ₂ O ₄

Iddingsite and Alexandrite Chemical Formula

While comparing Iddingsite 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 Iddingsite and Alexandrite chemical formula.

Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Iddingsite and Alexandrite Specific Gravity

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