Neptunite and Diopside Physical Properties

Neptunite

Diopside

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.19-3.233.22-3.40

1 7.18

1.5 Fracture

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

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

{110} good

Distinct/good on {110}

1.7 Mohs Hardness

5-65-6

2 10

1.8 Chemical Composition

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

CaMgSi₂O₆

Neptunite and Diopside Chemical Formula

While comparing Neptunite and Diopside 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 Neptunite and Diopside chemical formula.

Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Diopside- CaMgSi₂O₆

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Neptunite and Diopside Specific Gravity

Another important criteria for qualitative analysis of gemstones is Neptunite and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Diopside Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 3.22-3.40 whereas that of Diopside is 3.22-3.40.