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Carnelian
Carnelian

Neptunite
Neptunite



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Carnelian
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Neptunite

Carnelian and Neptunite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.643.19-3.23
Amber
1 7.18
1.5 Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
1.6 Cleavage
Absent
{110} good
1.7 Mohs Hardness
6.5-75-6
Amber
2 10
1.8 Chemical Composition
SiO2
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Carnelian and Neptunite Chemical Formula

While comparing Carnelian 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 Carnelian and Neptunite chemical formula.

  • Chemical formula of Carnelian- SiO2
  • Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Carnelian and Neptunite Specific Gravity

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