Jade and Andalusite Physical Properties

Jade

Andalusite

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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

2.90-3.383.05-3.21

1 7.18

1.5 Fracture

Splintery

Uneven, Subconchoidal, Splintery

1.6 Cleavage

1 or 2,2 prismatic.

Good on {110}, poor on {100}

1.7 Mohs Hardness

6-77.5

2 10

1.8 Chemical Composition

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

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

Jade and Andalusite Chemical Formula

While comparing Jade 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 Jade and Andalusite chemical formula.

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

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Jade and Andalusite Specific Gravity

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