GTD and Bonas Antwerp have a long-standing strategic partnership.

GTD provides Bonas exclusively with all technical diamond services including rough diamond categorization, sorting and valuations within an Antwerp-based tender and diamond processing facility which serves the global rough diamond buying community.  GTD and Bonas together help market Millions of carats of diamonds annually from producer mines across the globe.  In a few short years, this partnership has developed into the world’s leading rough diamond tender house.

Bonas-Couzyn NV
Suite 915 - Diamond Club Building
Pelikaanstraat 62
2018 Antwerp
T: +32 (0)3 233 70 80
F: +32 (0)3 225 15 34