Magnesite and Alexandrite Physical Properties

Magnesite

Alexandrite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Effervesces in hot HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.92-3.123.69-3.81

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Not Available

1.6 Cleavage

[10 1 1] perfect

1,1 ; 3,2.

1.7 Mohs Hardness

3.5-4.58.5

2 10

1.8 Chemical Composition

MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

BeAl ₂ O ₄

Magnesite and Alexandrite Chemical Formula

While comparing Magnesite 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 Magnesite and Alexandrite chemical formula.

Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Magnesite and Alexandrite Specific Gravity

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