Jade and Astrophyllite Physical Properties

Jade

Astrophyllite

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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

3.2-3.4

1.5 Fracture

Gemstones of the world (2001), Difficult, Splintery

Uneven, Brittle, Metallic

1.6 Cleavage

1 or 2,2 prismatic.

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6-7

1.8 Chemical Composition

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

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Jade and Astrophyllite Chemical Formula

While comparing Jade and Astrophyllite 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 Astrophyllite chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Semi Precious Gemstones

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Jade and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jade and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Jade is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.