The Blue Diamond Stakes is a Group 1 thoroughbred horse race for two year olds at set weights. It is run over 1200 metres at the famous Caulfield Racecourse in Melbourne. The race is Victoria's richest two year old race and in 2006 the prize money was $1 million plus.
The Blue Diamond Stakes is run at Caulfield late February. In 2006 the Melbourne Racing Club received 1449 nominations (733 Colts and Geldings and 716 Fillies) for the 24 February 2007 Blue Diamond Stakes.
Past Blue Diamond Stakes winners include Sleek Chassis, Nadeem, Undoubtedly, Alinghi, Kusi, Bel Esprit, True Jewels and Road To Success.