In 2008 as well, Royal Diamond met up to his reputation as a highly popular riding horse maker. His son Roadrunner was sold for 150,000 Euros in Vechta and his licensed son Royal Dario Fo brought 75,000 Euros. With Royal Discovery, Royal Deniro (Vice State Champion), Readers Digest and Royal Happyness, Royal Diamond was also the sire of other top priced auction horses. 

Among his more than 350 offspring that are successful in sport up to advanced level are Royal Gala/Laura Pytkowjat, Rich Charly II/Karen and Natalie Betz, Rhythm and Dance/Ute von Platen and Royal Affair who won classes in the Sunshine Tour as well as Royal Floggensee/Frank Agne. The latter is one of Royal Diamond’s seven licensed sons. His licensed son Royaldik won his stallion performance test and placed in medium (M) level show jumping before also collecting ribbons in medium (M**) level dressage classes. On the course, Royal Highness has placed up to advanced (S**) level. Ravella Laurie won the Riding Horse Championships of Nürten-Hardenberg and Rubina was a Bundeschampion in Austria. 

Royal Diamond does not need to fear comparison with his full brother, Rohdiamant, who is also stationed at Gestüt Vorwerk: 1996 I-f Premium stallion, 1997 stallion performance test winner, 1998 I-b Main Premium winner, 1999 2nd place at the Bundeschampionat in the class for 5-year old dressage horses and 2000 Bundeschampion and VTV Dressage Stallion of the Year. He then placed twice in the Burg Pokal Final, took the Promising Stallion title in Zwolle and has more than 40 first places up to Grand Prix, including the Weser-Ems Championships.