Diamond Necklace
Foaled 2023 · by St Mark's Basilica out of Prudenzia (Dansili)
€740,820Prize money
Form 111/11123 (latest on the right) · Flat · ran 9 Aug 25 – 4 Oct 26, last for Aidan O'Brien · current OR 120
Group 1 won the Qatar Prix Marcel Boussac - Criterium des Pouliches (2yo Fillies) (Grande Course) (Turf) (2025)
Group 1 won the Emirates Poule d'Essai Des Pouliches (Fillies) (Turf) (2026)
Group 1 won the Prix de Diane Longines (Fillies) (Turf) (2026)
Group 1 won the Qatar Nassau Stakes (Group 1) (2026)
Listed won the Ballylinch Stud Irish EBF Ingabelle Stakes (Fillies' Listed) (2025)
| Date | Course & race | Trip | Going | Pos | OR | PR | Jockey |
|---|---|---|---|---|---|---|---|
| 4 Oct 26 | Longchamp (FR) Group 1Qatar Prix de l'Arc de Triomphe (Group 1) · Class 1 · 1m4f · Good To Soft | 1m4f | Good To Soft | 3/16 | 120 | - | C. Soumillon |
| 23 Aug 26 | Deauville (FR) Group 1Sumbe Prix Jean Et Louis Romanet · Class 1 · 1m2f · Soft To Heavy | 1m2f | Soft To Heavy | 2/10 | 120 | - | Ryan Moore |
| 30 Jul 26 | Goodwood Group 1Qatar Nassau Stakes (Group 1) · Class 1 · 1m2f · Good To Firm | 1m2f | Good To Firm | 1/5 | 113 | 121 | Ryan Moore |
| 14 Jun 26 | Chantilly (FR) Group 1Prix de Diane Longines (Fillies) (Turf) · 1m2½f · Good To Firm | 1m2½f | Good To Firm | 1/11 | 115 | - | Ryan Moore |
| 10 May 26 | Longchamp (FR) Group 1Emirates Poule d'Essai Des Pouliches (Fillies) (Turf) · 1m · Heavy | 1m | Heavy | 1/15 | 112 | - | Ryan Moore |
| 5 Oct 25 | Longchamp (FR) Group 1Qatar Prix Marcel Boussac - Criterium des Pouliches (2yo Fillies) (Grande Course) (Turf) · 1m · Very Soft | 1m | Very Soft | 1/8 | – | - | Christophe Soumillon |
| 13 Sep 25 | Leopardstown ListedBallylinch Stud Irish EBF Ingabelle Stakes (Fillies' Listed) · 7f · Good To Yielding | 7f | Good To Yielding | 1/8 | – | 91 | Christophe Soumillon |
| 9 Aug 25 | CurraghGrand Hotel Malahide Irish European Breeders Fund Fillies Juvenile Race · 7f · Good | 7f | Good | 1/10 | – | 91 | Wayne Lordan |
St Mark's Basilica as a stallion
In our records: 146 runners, 67 winners (46%), 6 black-type winners including 1 at the top level, 8 more placed in black type. Runners foaled 2023–2024.
On the track himself: 9 runs, 6 wins — Group 1 winner (Darley Dewhurst Stakes (Group 1)).
His best
Diamond Necklace Group 1 OR 120 · Venetian Prince Group 2 OR 107 · Aylin Group 2 OR 96 · Thesecretadversary Group 3 OR 114 · Pathein Listed OR 103 · King Of Cloughan Listed OR 102
The dam: Prudenzia by Dansili
She ran 5 times and won 2 — Listed winner. Dam of 9 winners from 10 other runners.
Chicquita Group 1 half-sibling, by Montjeu
Magic Wand Group 1 half-sibling, by Galileo
Pacifique Group 3 out of the 2nd dam, by Montjeu
Philomene Group 3 half-sibling, by Dubawi
English King Listed out of the 2nd dam, by Camelot
Enemy bt half-sibling, by Muhaarar
Je Ne Regretterien bt half-sibling, by Galileo
The dam’s other foals
| Horse | Runs | Wins | Best |
|---|---|---|---|
| Marylebone (FR) 2024 filly · by Night Of Thunder | 1 | 1 | PR 81 |
| Gulliver's Travels (IRE) 2019 colt · by Galileo | 6 | 2 | OR 93 |
| Philomene (IRE) Group 3 2018 filly · by Dubawi | 6 | 2 | – |
| Enemy (GB) bt 2017 gelding · by Muhaarar | 53 | 7 | OR 112 |
| Je Ne Regretterien (GB) bt 2016 filly · by Galileo | 4 | 1 | – |
| Magic Wand (IRE) Group 1 2015 mare · by Galileo | 28 | 4 | OR 116 |
| Craven's Legend (IRE) 2013 colt · by Invincible Spirit | 4 | 1 | – |
| Truth (IRE) 2012 filly · by Galileo | 2 | 0 | PR 77 |
| Sinnamary (IRE) 2011 filly · by Galileo | 3 | 1 | – |
| Chicquita (IRE) Group 1 2010 filly · by Montjeu | 8 | 1 | OR 115 |
Diamond Necklace in the sale ring
| Sale | Result | Bought by | Sold by |
|---|---|---|---|
| 2024 Arqana August Yearling SaleLot 270 · as a yearling | €1,700,000Michael Vincent MAGNIER | Michael Vincent MAGNIER | Monceaux |
The family at the sales — out of the same dam
| Foal | Sale | Result |
|---|---|---|
| 2025 colt by Siyouni | 2026 Arqana August Yearling SaleLot 128 · yearling | €1,000,000Yoshito YAHAGI |
| Marylebone2024 filly by Night Of Thunder | 2025 Arqana August Yearling SaleLot 206 · yearling | €3,000,000Amo Racing Ltd |
| Enemy2017 gelding by Muhaarar | 2021 Arqana Autumn SaleLot 380 · in training | €92,000RPG BLOODSTOCK / IAN WILLIAMS |
| Gulliver's Travels2019 colt by Galileo | 2020 Arqana Selection SaleLot 199 · yearling | €2,000,000Michael Vincent MAGNIER |
| Truth2012 filly by Galileo | 2020 Arqana Breeding Stock SaleLot 178 · broodmare | €580,000MINSTER STUD |
| Philomene2018 filly by Dubawi | 2019 Arqana August Yearling SaleLot 148 · yearling | €1,625,000 |
| Enemy2017 colt by Muhaarar | 2018 Arqana August Yearling SaleLot 16 · yearling | €420,000David REDVERS |
| Je Ne Regretterien2016 filly by Galileo | 2017 Arqana August Yearling SaleLot 51 · yearling | €950,000MAYFAIR SPECULATORS/P&R DOYLE/M.V. MAGNIER |
| Magic Wand2015 filly by Galileo | 2016 Arqana August Yearling SaleLot 97 · yearling | €1,400,000P. & R. DOYLE / MV MAGNIER / MAYFAIR SPECULATORS |
| Sinnamary2011 filly by Galileo | 2015 Tattersalls December MaresLot 1898 · broodmare | 700,000gnsHugo Lascelles Bloodstock |
| Craven's Legend2013 colt by Invincible Spirit | 2014 Arqana August Yearling SaleLot 178 · yearling | €1,100,000Mayfair Speculators/P Doyle |
| Truth2012 filly by Galileo | 2013 Arqana August Yearling SaleLot 33 · yearling | €1,000,000MAGNIER Michael Vincent |
| Chicquita2010 filly by Montjeu | 2013 Goffs November Breeding Stock SaleLot 1128 · broodmare | €6,000,000Peter & Ross Doyle B/s Ltd |
| Sinnamary2011 filly by Galileo | 2012 Arqana August Yearling SaleLot 49 · yearling | €1,100,000AGENCE FIPS |
| Chicquita2010 filly by Montjeu | 2011 Arqana August Yearling SaleLot 125 · yearling | €600,000BADGERS BLOODSTOCK |
From our racing database: every British and Irish result since 2005, and every Goffs, Tattersalls, Tattersalls Ireland and Arqana sale 2005 – 2026. Linked by the seller — always check the passport matches.