Diamond Necklace sparkles in Prix Marcel Boussac

Diamond Necklace dazzled under Christophe Soumillon to take the Qatar Prix Marcel Boussac at ParisLongchamp for trainer Aidan O’Brien.

The unbeaten two-year-old, who is by St Mark’s Basilica, was the 11-10 favourite in a field of nine as she aimed to maintain her flawless record when stepped up to Group One level.

Under a patient ride she did so with little fuss, travelling in mid-division until the home turn before mounting a challenge and quickly taking up the lead to triumph comfortably from Green Spirit.

O’Brien said: “We thought this filly was a bit babyish to come here, but Christophe rode her in Leopardstown and said we should let her come and then leave her alone after that for the year.

“I would imagine we’ll put her away now and I’d say she’ll probably start with a Guineas preparation, as we do with them all, and then take it from there – she’s not short of speed.

“She’s improving and the St Mark’s Basilica horses have been doing that – every week for the last two months they’ve been getting better. He didn’t win his Group race until the Dewhurst, which is still two weeks away, and his offspring are obviously very like him.

“She’s a lovely filly and Christophe gave her a lovely ride.”

The winning rider, who did not even have to reach for his whip, added: “She’s amazing, I was very confident with her. I think she was the best ride of my weekend because last time she gave me a great sensation.

“She was so relaxed going down to the start, so professional and I had the perfect run when I asked her to quicken, she just picked up so easily and I didn’t have to ask her too much, hands and heels only.

“I think for next year, she will be something great.”