Neptunite and Tanzanite Physical Properties

Neptunite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.19-3.233.35

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{110} good

Perfect {010}, imperfect {100}

1.7 Mohs Hardness

5-66.5-7

2 10

1.8 Chemical Composition

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

Ca₂Al₃(SiO₄)₃(OH)

Neptunite and Tanzanite Chemical Formula

While comparing Neptunite and Tanzanite 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 Tanzanite chemical formula.

Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Neptunite and Tanzanite Specific Gravity

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