Aragonite and Sunstone Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Dilute acid
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.93-2.96
  
2.62-2.65
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Gemstones of the world (2001)
  
Cleavage
Distinct on {010}, imperfect {110} and {011}
  
001
  
Mohs Hardness
3.5-4
  
6
  
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Aragonite and Sunstone Chemical Formula
While comparing Aragonite and Sunstone 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 Aragonite and Sunstone chemical formula.
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Aragonite and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Aragonite and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.