Download - Links

 

WIFI Linz - Ausbildung "Gemmologische Akademie Linz"

Gemmologie: Edelstein- & Diamantkunde | WIFI OÖ (wifi-ooe.at)

 

FEEG 

www.feeg-education.com

 

 

CIBJO 

The Blue Books - CIBJO

 

International Diamond Council

IDC | International Diamond Council