Jade and Common Opal Physical Properties

Jade

Common Opal

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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

2.90-3.381.98-2.50

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

1 or 2,2 prismatic.

Not Available

1.7 Mohs Hardness

6-75.5-6.5

2 10

1.8 Chemical Composition

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

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Jade and Common Opal Chemical Formula

While comparing Jade and Common Opal 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 Common Opal chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Semi Precious Gemstones

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Jade Vs Turquoise

Jade Vs Tourmaline

Jade and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Jade is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.