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Sapphire
Sapphire

Almandine
Almandine



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Sapphire
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Almandine

Sapphire and Almandine Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
insoluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.95-4.033.95-4.30
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
None, but may exhibit parting
none
1.7 Mohs Hardness
97-7.5
Amber
2 10
1.8 Chemical Composition
Al 2 O 3
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Sapphire and Almandine Chemical Formula

While comparing Sapphire and Almandine 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 Sapphire and Almandine chemical formula.

  • Chemical formula of Sapphire- Al 2 O 3
  • Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Sapphire and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Almandine Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.95-4.30 whereas that of Almandine is 3.95-4.30.