Amazonite and Andalusite Physical Properties

Amazonite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.55-2.573.05-3.21

1 7.18

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Fracture

Uneven

Uneven, Subconchoidal, Splintery

Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Good on {110}, poor on {100}

Mohs Hardness

6-6.57.5

2 10

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Chemical Composition

KAlSi₃O₈

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Amazonite and Andalusite Chemical Formula

While comparing Amazonite and Andalusite 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 Amazonite and Andalusite chemical formula.

Chemical formula of Amazonite- KAlSi₃O₈
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Amazonite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amazonite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amazonite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Amazonite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.