After making sure that Ballydoyle's 1-2 favourite Diamond Necklace (St Mark's Basilica) delivered in Sunday's G1 Prix de Diane Longines at Chantilly, Ryan Moore become the first jockey in history to win every English, Irish and French Classic.This was far from straightforward, with the Poule d'Essai des Pouliches heroine pushed all the way to the line by the 35-1 outsider Pink Panthera (Chachnak), who nearly stole it for France under Tony Piccone, but Moore was in his usual unflinching mood to hold on by a short neck. Inis Mor (Galiway) was two lengths away in third.For all that this represented a highly significant landmark for the jockey supreme, he was typically humble and quick to deflect while giving an insight into the mentality that made all this possible. “I'm very lucky that I ride for Aidan and Coolmore and they produce these horses and buy these horses,” he said. “I'm delighted to win this and that she won, now I just need to go out and do it again next week.”Emulating the achievement of her sire in completing a French Classic double, Diamond Necklace also joins Allez France, Zarkava, Divine Proportions and Blue Rose Cen winning the Prix Marcel Boussac, Poule d'Essai and this. Aidan O'Brien, who was collecting a seventh Classic in 2026, added, “I'm lost for words! She's an incredible filly, very natural, very nimble and quick and gets the mile and a quarter. She's just very easy and very natural.”DIAMOND NECKLACE SHINES BRIGHTEST IN THE PRIX DE DIANE LONGINES! pic.twitter.com/zWvBKLdzld— At The Races (@AtTheRaces) June 14, 2026 The post Diamond Necklace Gives Moore Historic Classic Clean Sweep appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.