Triplite and Alexandrite Physical Properties

Triplite

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

3.85-3.94

3.69-3.81

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

Not Available

1.6 Cleavage

{010} Good, {100} Distinct

1,1 ; 3,2.

1.7 Mohs Hardness

5-5.5

8.5

1.8 Chemical Composition

(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

BeAl ₂ O ₄

Triplite and Alexandrite Chemical Formula

While comparing Triplite 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 Triplite and Alexandrite chemical formula.

Chemical formula of Triplite- (Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Triplite and Alexandrite Specific Gravity

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