A leading producer and distributor of quality polished diamonds worldwide, SDE Group is both a large, global business and a family business, with a strong and longstanding commitment to personal service, excellence, and the highest quality inventory.

Our manufacturing centers and offices are located worldwide, supporting a global infrastructure supplying a wide range of diamonds to retailers, from small specialty stores to large chains, meeting every need at any time.

Ethical Sources

Known as KPCS, the Kimberley Process Certification Scheme is a joint initiative of governments, organizations in the diamond industry, and private companies to assure a legitimate ...

White Diamonds

Diamond is the hardest material on earth, yet also the most beautiful and desirable. For centuries, people all over the world have been drawn to the incredible fire, sparkle, and brilliance ...

4Cs

Diamond Color, Clarity, Cut and Carat Weight are collectively termed the 4Cs – the factors that, when combined, define a diamond’s quality and ultimately determine its value. GIA created the 4Cs of Diamond Quality, which has become the universal method for assessing the quality of any diamond, anywhere in the world. The creation of the 4Cs means that diamond quality can be communicated in a universal language so diamond purchasers know exactly what they are buying.