Fayalite and Jade Physical Properties

Fayalite

Jade

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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

4.3922.90-3.38

1 7.18

1.5 Fracture

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

Gemstones of the world (2001), Difficult, Splintery

1.6 Cleavage

{010} moderate, {100} imperfect

1 or 2,2 prismatic.

1.7 Mohs Hardness

6.5-76-7

2 10

1.8 Chemical Composition

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

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

Fayalite and Jade Chemical Formula

While comparing Fayalite 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 Fayalite and Jade chemical formula.

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

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Fayalite and Jade Specific Gravity

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