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Spinel
Spinel

Sard
Sard



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Spinel
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Sard

Spinel and Sard 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
3.64-3.662.58-2.63
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
None, but may exhibit slight parting
Not Available
1.7 Mohs Hardness
86.5-7
Amber
2 10
1.8 Chemical Composition
MgAl2O4
SiO 2Ulrich Henn and Claudio C.

Spinel and Sard Chemical Formula

While comparing Spinel and Sard 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 Sard chemical formula.

  • Chemical formula of Spinel- MgAl2O4
  • Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Spinel and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Sard Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.58-2.63 whereas that of Sard is 2.58-2.63.