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Spinel
Spinel

Johachidolite
Johachidolite



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Spinel
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Johachidolite

Spinel and Johachidolite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
none
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.64-3.663.45
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Not Available
1.6 Cleavage
None, but may exhibit slight parting
None
1.7 Mohs Hardness
87.5
Amber
2 10
1.8 Chemical Composition
MgAl2O4
CaAlB 3O 7Michael O’Donoghue , Gems, Sixth Edition (2006)

Spinel and Johachidolite Chemical Formula

While comparing Spinel and Johachidolite 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 Spinel and Johachidolite chemical formula.

  • Chemical formula of Spinel- MgAl2O4
  • Chemical formula of Johachidolite- CaAlB 3O 7Michael O’Donoghue , Gems, Sixth Edition (2006)

Spinel and Johachidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Johachidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Johachidolite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 3.45 whereas that of Johachidolite is 3.45.