Gemstone ID  - 532 nm

A39 - a

Species : Pyrope Garnet    
Chemical Formula :     Fe3Al2(SiO4)3  
Identification Characteristics :
Classification:  Silicate
Hardness:7 ~ 7.5    S.G.:3.8
Cleavage: None   
R.I.: 1.72 ~ 1.76      D.R.: None
Crystal System: Isometric
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
353、557、861、919、1168、1347 (cm-1)

A39 - b

Species : Pyrope Garnet    
Chemical Formula :     Fe3Al2(SiO4)3  
Identification Characteristics :
Classification:  Silicate
Hardness:7 ~ 7.5    S.G.:3.8
Cleavage: None   
R.I.: 1.72 ~ 1.76      D.R.: None
Crystal System: Isometric
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
353、557、861、919、1168、1347 (cm-1)

A39 - c

Species : Pyrope Garnet    
Chemical Formula :     Fe3Al2(SiO4)3  
Identification Characteristics :
Classification:  Silicate
Hardness:7 ~ 7.5    S.G.:3.8
Cleavage: None   
R.I.: 1.72 ~ 1.76      D.R.: None
Crystal System: Isometric
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
353、557、861、919、1168、1347 (cm-1)

A39 - d

Species : Pyrope Garnet    
Chemical Formula :     Fe3Al2(SiO4)3  
Identification Characteristics :
Classification:  Silicate
Hardness:7 ~ 7.5    S.G.:3.8
Cleavage: None   
R.I.: 1.72 ~ 1.76      D.R.: None
Crystal System: Isometric
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
353、557、861、919、1168、1347 (cm-1)

B36 - a

Species : Pectolite       
Chemical Formula :   NaCa2Si3O8(OH)   
Identification Characteristics :
Classification:  Silicate
Hardness:4.5 ~ 5      S.G.:2.74 ~ 2.88
Cleavage: Perfect
R.I.: 1.60 ~ 1.64         D.R.: 0.032
Crystal System: Triclinic
Fracture: Uneven
Spectral Characteristics: 
317、355、375、413、650、686、 973、1003、1025(cm-1)

B36 - b

Species : Pectolite       
Chemical Formula :   NaCa2Si3O8(OH)   
Identification Characteristics :
Classification:  Silicate
Hardness:4.5 ~ 5      S.G.:2.74 ~ 2.88
Cleavage: Perfect
R.I.: 1.60 ~ 1.64         D.R.: 0.032
Crystal System: Triclinic
Fracture: Uneven
Spectral Characteristics: 
317、355、375、413、650、686、 973、1003、1025(cm-1)

B37

Species : Petalite       
Chemical Formula :     LiAlSi4O10  
Identification Characteristics : 
Classification:  Silicate
Hardness:6 ~ 6.5      S.G.:2.3 ~ 2.5
Cleavage: Perfect
R.I.: 1.50 ~ 1.51         D.R.: 0.014
Crystal System: Monoclinic
Fracture: Subconchoidal
Spectral Characteristics: 
281、317、356、381、466、489、 792、 1133(cm-1)

B38 - a

Species : Phenakite       
Chemical Formula :     Be2SiO4   
Identification Characteristics :  
Classification:  Silicate
Hardness:7.5 ~ 8      S.G.:2.93 ~ 3.00
Cleavage: Perfect   
R.I.: 1.65 ~ 1.67         D.R.: 0.015     
Crystal System: Trigonal
Fracture: Conchoidal
Spectral Characteristics: 
161、221、383、444、524、878、916、949、1019(cm-1)

B38 - b

Species : Phenakite       
Chemical Formula :     Be2SiO4   
Identification Characteristics :  
Classification:  Silicate
Hardness:7.5 ~ 8      S.G.:2.93 ~ 3.00
Cleavage: Perfect   
R.I.: 1.65 ~ 1.67         D.R.: 0.015     
Crystal System: Trigonal
Fracture: Conchoidal
Spectral Characteristics: 
161、221、383、444、524、878、916、949、1019(cm-1)

B38 - c

Species : Phenakite       
Chemical Formula :     Be2SiO4   
Identification Characteristics :  
Classification:  Silicate
Hardness:7.5 ~ 8      S.G.:2.93 ~ 3.00
Cleavage: Perfect   
R.I.: 1.65 ~ 1.67         D.R.: 0.015     
Crystal System: Trigonal
Fracture: Conchoidal
Spectral Characteristics: 
161、221、383、444、524、878、916、949、1019(cm-1)

B41

Species : Prehnite      
Chemical Formula :   Ca2Al2Si3O10(OH)2  
Identification Characteristics :
Classification:  Silicate
Hardness:6 ~ 6.5      S.G.:2.90 ~ 2.95
Cleavage: Perfect   
R.I.: 1.61 ~ 1.64        D.R.: 0.016      
Crystal System:  Orthorhombic
Fracture: Uneven
Spectral Characteristics: 
316、386、519、607、947、 1080 (cm-1)

B43

Species : Pyrite      
Chemical Formula :     FeS2   
Identification Characteristics :  
Classification: Sulfide
Hardness:6 ~ 6.5        S.G.:5
Cleavage: Imperfect
R.I.: None                   D.R.: None
Crystal System: Isometric
Fracture: Conchoidal to Uneven
Spectral Characteristics: 
 341、377 (cm-1)

C19

Species : Pyrophylite        
Chemical Formula :     Al2(Si4O10)(OH)2   
Identification Characteristics : 
Classification:  Silicate
Hardness:1 ~ 2       S.G.:2.65 ~ 2.81
Cleavage: Perfect       
R.I.: 1.54 ~ 1.60       D.R.: 0.045
Crystal System: Monoclinic
Fracture: Uneven
Spectral Characteristics: 
264、358、435、468、706、813、840、920、959、1049、1070 (cm-1)