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Alabaster
Alabaster

Aragonite
Aragonite



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Alabaster
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Aragonite

Alabaster and Aragonite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Dilute acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.302.93-2.96
Amber
1 7.18
1.5 Fracture
Not Available
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Not Available
Distinct on {010}, imperfect {110} and {011}
1.7 Mohs Hardness
23.5-4
Amber
2 10
1.8 Chemical Composition
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alabaster and Aragonite Chemical Formula

While comparing Alabaster and Aragonite 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 Alabaster and Aragonite chemical formula.

  • Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alabaster and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.