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Sire Sicambre
Dam Dictaway
Grandsire Prince Bio
Damsire Honeway
Gender Stallion
Foaled 1962
Country Great Britain
Color Dark Bay
Breeder Baron Guy de Rothschild
Owner Baron Guy de Rothschild
Trainer Geoffroy Watson
Record 12: 6-5-1
Earnings F 1,643,013 + US$90,000
Diatome is a thoroughbred racehorse out of Dictaway by Sicambre. He was born around 1962 in Great Britain, and was bred by Baron Guy de Rothschild.
Major wins
Prix Noailles (1965)
Prix du Prince d'Orange (1965)
Washington, D.C. International (1965)
Prix Ganay (1966)
Prix Boiard (1966)
Prix Diatome at Hippodrome de Saint-Cloud
Horse (Equus ferus caballus)
Last updated on October 7, 2006

Diatome (1962–1985) was a British-bred Thoroughbred racehorse owned and bred by the French banker, Baron Guy de Rothschild.

A descendant of Prince Palatine, Diatome won important races in France but had the bad luck of being foaled the same year as superstars Sea Bird and Reliance. He finished second to Reliance in the Prix du Jockey Club and the Grand Prix de Paris. In the Prix de l'Arc de Triomphe, Diatome finished third behind Reliance and winner Sea Bird. However, he earned a prestigious victory in the United States in the 1965 Washington, D.C. International at the Laurel Park Racecourse in Laurel, Maryland.

Diatome was retired to stud in 1967 at his owner's Haras de Meautry and in 1975 was sent to a breeding farm in Japan. He died on October 8, 1985.



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