| Group 1 race | |
| Location | Caulfield Racecourse |
|---|---|
| Inaugurated | 1971 |
| Race type | Thoroughbred |
| Sponsor | Ladbrokes (2017) |
| Race information | |
| Distance | 1,200 metres |
| Surface | Turf |
| Qualification | Two year old |
| Weight | Set weights colts and geldings – 56 1⁄2 kg fillies – 54 1⁄2 kg |
| Purse |
$1,500,000 (2017) Trophy $15,000 |
The Blue Diamond Stakes is a Melbourne Racing Club Group 1 Thoroughbred horse race for two-year-olds, at set weights, run over 1200 metres at Caulfield Racecourse in Melbourne, Victoria, Australia. The event is Victoria's richest two-year-old race with total prize money of A$1,500,000.
Prizemoney was increased from $1 million to $1.5 million in 2016.
In 1996 the event was held at Flemington Racecourse due to reconstruction of Caulfield Racecourse.
† Roedean finished first but was later disqualified for returning a positive swab