Jade and Poudretteite Physical Properties

Jade

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.382.51-2.53

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Conchoidal, Splintery

1.6 Cleavage

1 or 2,2 prismatic.

None

1.7 Mohs Hardness

6-75

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Jade and Poudretteite Chemical Formula

While comparing Jade and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Jade and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Jade is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.