Andalusite and Jade Physical Properties

Andalusite

Jade

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.05-3.212.90-3.38

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Splintery

Cleavage

Good on {110}, poor on {100}

1 or 2,2 prismatic.

Mohs Hardness

7.56-7

2 10

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Chemical Composition

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

Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

Andalusite and Jade Chemical Formula

While comparing Andalusite and Jade 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 Andalusite and Jade chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

Compare Brown Gemstones

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Andalusite and Jade Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Jade Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Jade Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.90-3.38 whereas that of Jade is 2.90-3.38.