Gemstone ID -  532 nm

A27 - a

Species : Labradorite Feldspar      
Chemical Formula :  (Na,Ca)(Al,Si)4O8
Identification Characteristics :
Classification:  Silicate
Hardness:6 ~ 6.5   S.G.:2.69 ~ 2.72
Cleavage: Perfect      
Crystal System: Triclinic
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
280、482、508、563 (cm-1)

A27 - b

Species : Labradorite Feldspar      
Chemical Formula :  (Na,Ca)(Al,Si)4O8
Identification Characteristics :
Classification:  Silicate
Hardness:6 ~ 6.5   S.G.:2.69 ~ 2.72
Cleavage: Perfect      
Crystal System: Triclinic
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
280、482、508、563 (cm-1)

A27 - c

Species : Labradorite Feldspar      
Chemical Formula :  (Na,Ca)(Al,Si)4O8
Identification Characteristics :
Classification:  Silicate
Hardness:6 ~ 6.5   S.G.:2.69 ~ 2.72
Cleavage: Perfect      
Crystal System: Triclinic
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
280、482、508、563 (cm-1)

B32 - a

Species : Lazulite      
Chemical Formula : (Mg, Fe)Al2(PO4)2(OH)2   
Identification Characteristics :  
Classification: Phosphate
Hardness:5.5 ~ 6           S.G.:3.1
Cleavage: Imperfect~ Good Prismatic  
R.I.: 1.61 ~ 1.64              D.R.: 0.031
Crystal System:  Monoclinic
Fracture: Uneven to Splintery
Spectral Characteristics: 
411、476、645、1059、1011、 1136(cm-1)

B32 - b

Species : Lazulite      
Chemical Formula : (Mg, Fe)Al2(PO4)2(OH)2   
Identification Characteristics :  
Classification: Phosphate
Hardness:5.5 ~ 6           S.G.:3.1
Cleavage: Imperfect~ Good Prismatic  
R.I.: 1.61 ~ 1.64              D.R.: 0.031
Crystal System:  Monoclinic
Fracture: Uneven to Splintery
Spectral Characteristics: 
411、476、645、1059、1011、 1136(cm-1)

B32 - c

Species : Lazulite      
Chemical Formula : (Mg, Fe)Al2(PO4)2(OH)2   
Identification Characteristics :  
Classification: Phosphate
Hardness:5.5 ~ 6           S.G.:3.1
Cleavage: Imperfect~ Good Prismatic  
R.I.: 1.61 ~ 1.64              D.R.: 0.031
Crystal System:  Monoclinic
Fracture: Uneven to Splintery
Spectral Characteristics: 
411、476、645、1059、1011、 1136(cm-1)

B33 - a

Species : Leucite      
Chemical Formula :     KAlSi2O6   
Identification Characteristics :    
Classification:  Silicate
Hardness:5.5 ~ 6.0    S.G.:2.5
Cleavage: Poor   
R.I.: 1.51                     D.R.: 0.001
Crystal System: Tetragonal
Fracture: Conchoidal
Spectral Characteristics: 
 496、526 (cm-1)

B33 - b

Species : Leucite      
Chemical Formula :     KAlSi2O6   
Identification Characteristics :    
Classification:  Silicate
Hardness:5.5 ~ 6.0    S.G.:2.5
Cleavage: Poor   
R.I.: 1.51                     D.R.: 0.001
Crystal System: Tetragonal
Fracture: Conchoidal
Spectral Characteristics: 
 496、526 (cm-1)