You need to upgrade your Flash Player. This site requires a more recent version of the Flash plugin than you currently have. This plugin is free and can be downloaded here. About us Background & History People Milestones Products & Services Rough Diamonds Coloured Rough Diamonds Geographic footprint Contact SanaDiam NV is a well established rough and polished diamond trading company in Antwerp, the world’s most important diamond centre. With roots going back more than 50 years, the company has built an impeccable reputation as a solid and reliable trader with a global network of customers and contacts.