Pearl and Neptunite Physical Properties

Pearl

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

2.60-2.853.19-3.23

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

none

{110} good

1.7 Mohs Hardness

2.5-4.55-6

2 10

1.8 Chemical Composition

Not Available

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

Pearl and Neptunite Chemical Formula

While comparing Pearl 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 Pearl and Neptunite chemical formula.

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

Compare Blue Gemstones

Pearl Vs Precious Opal

Pearl Vs Prase Opal

Pearl Vs Prase

Pearl and Neptunite Specific Gravity

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