Amazonite and Neptunite Physical Properties

Amazonite

Neptunite

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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

2.55-2.573.19-3.23

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

{110} good

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

KAlSi₃O₈

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

Amazonite and Neptunite Chemical Formula

While comparing Amazonite and Neptunite 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 Amazonite and Neptunite chemical formula.

Chemical formula of Amazonite- KAlSi₃O₈
Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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Amazonite and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amazonite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amazonite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Amazonite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.