HOME IDH has been a pioneering force in the diamond industry for over 40 years. It has built an exemplary global rough distribution operation and acted as technical consulting partner to many of the world’s largest rough diamond producers. Leading the business into its third generation of management, David Horowitz bring a new vision and vigour to the business, extending IDH’s technical expertise and progressive spirit into new areas. Today, IDH’s distinctive capabilities with assorting and distributing rough diamonds are stronger than ever. The business is also building scale in its top-make polished manufacturing business, and has extended further into innovative prestige jewellery through the establishment of IDH Titanium.