Jade and Dravite Physical Properties

Jade

Dravite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.383.03-3.18

1 7.18

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Fracture

Splintery

Uneven, Irregular, Conchoidal

Cleavage

1 or 2,2 prismatic.

{???} Indistinct

Mohs Hardness

6-77-7.5

2 10

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Chemical Composition

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

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Jade and Dravite Chemical Formula

While comparing Jade and Dravite 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 Dravite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Jade and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Dravite Optical Properties during the identification of gemstone. Specific gravity of Jade is 3.03-3.18 whereas that of Dravite is 3.03-3.18.