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Spinel
Spinel

Pleonaste
Pleonaste



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Spinel
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Pleonaste

Spinel and Pleonaste Physical Properties

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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
3.64-3.663.80
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Not Available
1.6 Cleavage
None, but may exhibit slight parting
Not Available
1.7 Mohs Hardness
88
Amber
2 10
1.8 Chemical Composition
MgAl2O4
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Spinel and Pleonaste Chemical Formula

While comparing Spinel and Pleonaste 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 Pleonaste chemical formula.

  • Chemical formula of Spinel- MgAl2O4
  • Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Spinel and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Spinel is 3.80 whereas that of Pleonaste is 3.80.