The Collector’s Edition™ of Argyle pink diamonds is the only internationally recognised product which offers completely independent grading and use of scientifically proven methodology in order to verify the Argyle mine origin by the Antwerp based International Gemological Institute (IGI). The diamonds are also independently security sealed by them for the ultimate protection of the purchaser. The IGI is the largest organisation of its kind, operating 18 laboratory locations throughout the world. It’s continuous commitment to gemological research has made them the ideal choice for the Collector’s Edition™. This current series of the Collector’s Edition™ of Argyle pink diamonds seal and certificate design pays homage to the mine’s accidental discovery in 1979 on top of an anthill.