Prasiolite and Andalusite Physical Properties

Prasiolite

Andalusite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.05-3.21

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

3,1

Good on {110}, poor on {100}

1.7 Mohs Hardness

77.5

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

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

Prasiolite and Andalusite Chemical Formula

While comparing Prasiolite 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 Prasiolite and Andalusite chemical formula.

Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Prasiolite and Andalusite Specific Gravity

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