Ireland 3yo

Diamond Necklace (IRE)

T: A P 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 11

8/11 Current odds

2/2 W/R

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Active

2 runs
2 wins
placed
100% strike
4 d off

Recent form

Form figures 11 4 days off

1 1

At Goodwood 1/1 1 win · 1 placed

On Good to Firm 1/1 1 win · 1 placed

Deep analytics

Career trajectory, going + distance lenses, connections history

Career Trajectory

last 2 runs · form score 0–100

Win
Placed
Mid-pack
Rear
DNF
OR mark

Peak form: 100
Mean: 100
Win %: 100%
Placed %: 100%
Trend: Unknown

Course Record

2 venues

Goodwood 100% 1-0-1
Longchamp (FR) 100% 1-0-1

Connections History

1 jockey · 1 trainer

Jockeys

Ryan Moore NOW 100% 2-0-2

Trainers

A P O'Brien NOW 100% 2-0-2

Going Record

2 classifiable runs

Untested Too few classifiable runs to draw a going profile.

Firm — 0 runs
Good to Firm 100% 1-0-1
Good — 0 runs
Good to Soft — 0 runs
Soft — 0 runs
Heavy 100% 1-0-1

Distance Record

2 classifiable runs

Untested Too few classifiable runs to draw a trip profile.

Sprint ≤ 6f — 0 runs
Seven 6½ – 7f — 0 runs
Mile 7f – 1m1f 100% 1-0-1
Middle 1m1f – 1m4f 100% 1-0-1
Staying ≥ 1m4f — 0 runs

Race history

2 of 2 runs

Date Race Pos Going Dist Jockey Odds

30 Jul 2026 Qatar Nassau Stakes (Group 1) Goodwood Class 1 1st/5 +0 Good To Firm 1m2f Ryan Moore OR 113 4/6F

10 May 2026 Emirates Poule d'Essai Des Pouliches (Fillies) (Turf) Longchamp (FR) 1st/15 +0 Heavy 1m Ryan Moore OR 112 4/5F

Connections

Trainer: A P O'Brien 22%
Jockey: Ryan Moore 27%
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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