Jade and Fayalite Physical Properties

Jade

Fayalite

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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

2.90-3.384.392

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

1 or 2,2 prismatic.

{010} moderate, {100} imperfect

1.7 Mohs Hardness

6-76.5-7

2 10

1.8 Chemical Composition

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

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Jade and Fayalite Chemical Formula

While comparing Jade and Fayalite 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 Fayalite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Jade and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Jade is 4.392 whereas that of Fayalite is 4.392.