Clinohumite and Alexandrite Physical Properties

Clinohumite

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

3.13-3.75

3.69-3.81

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Not Available

1.6 Cleavage

Poor on {100}

1,1 ; 3,2.

1.7 Mohs Hardness

8.5

1.8 Chemical Composition

(Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

BeAl ₂ O ₄

Clinohumite and Alexandrite Chemical Formula

While comparing Clinohumite 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 Clinohumite and Alexandrite chemical formula.

Chemical formula of Clinohumite- (Mg,Fe2+ ) 9(SiO 4) 4(F,OH)) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Clinohumite and Alexandrite Specific Gravity

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