Riebeckite and Hematite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.28-3.44
  
5.00-5.30
  
Fracture
Uneven, Splintery, Brittle
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
  
None, may show partings on {0001} and {10 1 1}
  
Mohs Hardness
5.0-6.0
  
6
  
Chemical Composition
Not Available
  
Fe 2O 3Arthur Thomas , Gemstones (2009)
  
Riebeckite and Hematite Chemical Formula
While comparing Riebeckite and Hematite 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 Riebeckite and Hematite chemical formula.
>- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Riebeckite and Hematite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riebeckite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.