Eudialyte and Demantoid Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
H 2 SO 4
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.74-3.00
  
3.77-3.95
  
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
Distinct on {0001} imperfect on {11 2 0}
  
Not Available
  
Mohs Hardness
5-5.5
  
6.5
  
Chemical Composition
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
  
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
  
Eudialyte and Demantoid Chemical Formula
While comparing Eudialyte and Demantoid 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 Eudialyte and Demantoid chemical formula.
- Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
- Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Eudialyte and Demantoid Specific Gravity
Another important criteria for qualitative analysis of gemstones is Eudialyte and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.