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Moonstone
Moonstone

Onyx
Onyx



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Moonstone
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Onyx

Moonstone and Onyx Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.56-2.60
2.55-2.70
1.5 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Not Available
1.6 Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Indiscernible
1.7 Mohs Hardness
6-6.5
6.5-7
1.8 Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
SiO2

Moonstone and Onyx Chemical Formula

While comparing Moonstone and Onyx 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 Moonstone and Onyx chemical formula.

  • Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
  • Chemical formula of Onyx- SiO2

Moonstone and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Onyx Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.55-2.70 whereas that of Onyx is 2.55-2.70.