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Ettringite
Ettringite

Sapphirine
Sapphirine



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Ettringite
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Sapphirine

Ettringite and Sapphirine Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Partially soluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.773.40-3.58
Amber
1 7.18
1.5 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
1.6 Cleavage
Perfect on {10 1 0}
{010} Perfect
1.7 Mohs Hardness
2-2.57.5
Amber
2 10
1.8 Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
(Al,Mg) 8(Al,Si) 6O 20Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ettringite and Sapphirine Chemical Formula

While comparing Ettringite and Sapphirine 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 Ettringite and Sapphirine chemical formula.

  • Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ettringite and Sapphirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Sapphirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Sapphirine Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.40-3.58 whereas that of Sapphirine is 3.40-3.58.