Gemstone ID -532nm

C13-a

Species : Gypsum       
Chemical Formula :     CaSO4．2H2O   
Identification Characteristics :  
Classification: Sulfate
Hardness:2               S.G.:2.32
Cleavage: Perfect       
 R.I.: 1.52 ~ 1.53        D.R.: 0.010
Crystal System: Monoclinic
Fracture: Splintery
Spectral Characteristics: 
412、492、619、1009、1142(cm-1)

C13-b

Species : Gypsum       
Chemical Formula :     CaSO4．2H2O   
Identification Characteristics :  
Classification: Sulfate
Hardness:2               S.G.:2.32
Cleavage: Perfect       
 R.I.: 1.52 ~ 1.53        D.R.: 0.010
Crystal System: Monoclinic
Fracture: Splintery
Spectral Characteristics: 
412、492、619、1009、1142(cm-1)

C13-c

Species : Gypsum       
Chemical Formula :     CaSO4．2H2O   
Identification Characteristics :  
Classification: Sulfate
Hardness:2               S.G.:2.32
Cleavage: Perfect       
 R.I.: 1.52 ~ 1.53        D.R.: 0.010
Crystal System: Monoclinic
Fracture: Splintery
Spectral Characteristics: 
412、492、619、1009、1142(cm-1)