Leviev Diamonds has been supplying high-quality diamonds to polishers, cutters and jewelers over the past three decades. Founded by renowned diamantaire, businessman and philanthropist Lev Leviev, Leviev is a member of the prestigious Leviev Group of Companies (LGC) and – uniquely among manufacturers – operates at every level of the diamond pipeline. With more than 30 years of experience in the diamond industry, is the world's largest privately held diamond manufacturer. The firm is also the world's largest diamond and cutting group and is entirely independent of external suppliers since the company has its own widespread sources of rough goods.