Gemstone ID - 532 nm

A33

Species : Oligoclase Feldspar       
Chemical Formula :     (Na,Ca)(Si,Al)4O8
Identification Characteristics : 
Classification:  Silicate
Hardness:6 ~ 6.5      S.G.:2.64 ~ 2.68
Cleavage: Perfect    
R.I.: 1.54 ~ 1.55         D.R.: 0.007
Crystal System: Triclinic
Fracture: Conchoidal to Uneven
Spectral Characteristics: 
287、479、508 (cm-1)

A35 - a

Species : Orthoclase Feldspar       
Chemical Formula :     KAlSi3O8
Identification Characteristics :
Classification:  Silicate
Hardness:6           S.G.:2.55 ~ 2.63
Cleavage: Perfect      
Crystal System: Monoclinic
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
282、470、511、1087 (cm-1)

A35 - b

Species : Orthoclase Feldspar       
Chemical Formula :     KAlSi3O8
Identification Characteristics :
Classification:  Silicate
Hardness:6           S.G.:2.55 ~ 2.63
Cleavage: Perfect      
Crystal System: Monoclinic
Fracture: Uneven to Conchoidal
Spectral Characteristics: 
282、470、511、1087 (cm-1)