Jade and Tourmaline Physical Properties

Jade

Tourmaline

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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

2.90-3.382.85-3.35

1 7.18

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

1 or 2,2 prismatic.

Indistinct

1.7 Mohs Hardness

6-77-7.5

2 10

1.8 Chemical Composition

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

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Jade and Tourmaline Chemical Formula

While comparing Jade and Tourmaline 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 Tourmaline chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Jade and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Jade is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.