Jade and Chromite Physical Properties

Jade

Chromite

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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

2.90-3.384.5-4.8

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Uneven

1.6 Cleavage

1 or 2,2 prismatic.

None, parting may develop along {111}

1.7 Mohs Hardness

6-75.5

2 10

1.8 Chemical Composition

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

Fe++Cr2O4

Jade and Chromite Chemical Formula

While comparing Jade and Chromite 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 Chromite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Chromite- Fe++Cr2O4

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Jade and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Chromite Optical Properties during the identification of gemstone. Specific gravity of Jade is 4.5-4.8 whereas that of Chromite is 4.5-4.8.