Jade and Almandine Physical Properties

Jade

Almandine

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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

2.90-3.38

3.95-4.30

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

1 or 2,2 prismatic.

none

1.7 Mohs Hardness

6-7

7-7.5

1.8 Chemical Composition

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

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Jade and Almandine Chemical Formula

While comparing Jade and Almandine 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 Almandine chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Jade and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Almandine Optical Properties during the identification of gemstone. Specific gravity of Jade is 3.95-4.30 whereas that of Almandine is 3.95-4.30.