4
Ireland 3yo

Diamond Necklace (IRE)

T: Aidan O'Brien · J: Ryan Moore · O: M Tabor D Smith Mrs J Magnier Westerberg
By St Mark's Basilica (FR) out of Prudenzia (IRE)
Form 111-1112
  1. 2
  2. 1
  3. 1
  4. 1
  5. 1
  6. 1
8/11 Current odds
6/7 W/R
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Active
  • 7 runs
  • 6 wins
  • placed
  • 86% strike
  • 30 d off

Recent form

Form figures 111-1112 30 days off
2 23 Aug 2026 Sumbe Prix Jean Et Louis Romanet Deauville (FR) 1 30 Jul 2026 Qatar Nassau Stakes (Group 1) Goodwood 1 14 Jun 2026 Prix de Diane Longines (Fillies) (… Chantilly (FR) 1 10 May 2026 Emirates Poule d'Essai Des Pouliche… Longchamp (FR) 1 5 Oct 2025 Qatar Prix Marcel Boussac - Criteri… Longchamp (FR) 1 13 Sep 2025 Ballylinch Stud Irish EBF Ingabelle… Leopardstown
At Goodwood 1/1 1 win · 1 placed
On Good to Firm 2/2 2 wins · 2 placed

Deep analytics

Career trajectory, going + distance lenses, connections history

Career Trajectory

last 7 runs · form score 0–100
9 Aug 2025 · Curragh · 1st/10 (won 0) 13 Sep 2025 · Leopardstown · 1st/8 (won 0) 5 Oct 2025 · Longchamp (FR) · 1st/8 (won 0) 10 May 2026 · Longchamp (FR) · 1st/15 (won 0) 14 Jun 2026 · Chantilly (FR) · 1st/11 (won 0) 30 Jul 2026 · Goodwood · 1st/5 (won 0) 23 Aug 2026 · Deauville (FR) · 2nd/10 (btn 2)
  • Win
  • Placed
  • Mid-pack
  • Rear
  • DNF
  • OR mark
Peak form
100
Mean
96
Win %
86%
Placed %
100%
Trend
Fading

Course Record

6 venues

Career strike 100%; best at Longchamp (FR) (100% from 2 runs).

  • Longchamp (FR) 100% 2-0-2
  • Chantilly (FR) 100% 1-0-1
  • Curragh 100% 1-0-1
  • Deauville (FR) 100% 0-1-1
  • Goodwood 100% 1-0-1
  • Leopardstown 100% 1-0-1

Connections History

3 jockeys · 1 trainer

Jockeys

  • Ryan Moore NOW 100% 3-1-4
  • Christophe Soumillon 100% 2-0-2
  • W. M. Lordan 100% 1-0-1

Trainers

  • Aidan O'Brien NOW 100% 6-1-7

Race history

7 of 7 runs
Date Race Pos Going Dist Jockey Odds
23 Aug 2026 Sumbe Prix Jean Et Louis Romanet Deauville (FR) Class 1 2nd/10 2 Soft To Heavy 1m2f Ryan Moore OR 120 2/9F
30 Jul 2026 Qatar Nassau Stakes (Group 1) Goodwood Class 1 1st/5 +0 Good To Firm 1m2f Ryan Moore OR 113 4/6F
14 Jun 2026 Prix de Diane Longines (Fillies) (Turf) Chantilly (FR) 1st/11 +0 Good To Firm 1m2½f Ryan Moore OR 115 1/2F
10 May 2026 Emirates Poule d'Essai Des Pouliches (Fillies) (Turf) Longchamp (FR) 1st/15 +0 Heavy 1m Ryan Moore OR 112 4/5F
5 Oct 2025 Qatar Prix Marcel Boussac - Criterium des Pouliches (2yo Fillies) (Grande Course) (Turf) Longchamp (FR) 1st/8 +0 Very Soft 1m Christophe Soumillon 11/10F
13 Sep 2025 Ballylinch Stud Irish EBF Ingabelle Stakes (Fillies' Listed) Leopardstown 1st/8 +0 Good To Yielding 7f Christophe Soumillon 1/2F
9 Aug 2025 Grand Hotel Malahide Irish European Breeders Fund Fillies Juvenile Race Curragh 1st/10 +0 Good 7f Wayne Lordan 9/1

Connections

Trainer
Aidan O'Brien 22%
Jockey
Ryan Moore 24%
Owner
M Tabor D Smith Mrs J Magnier Westerberg
Sire
St Mark's Basilica (FR)
Dam
Prudenzia (IRE)
Dam sire
Dansili
Country
Ireland
Age
3yo

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