2011-2012: Three-year-old season
She made her racing début as a three-year-old at Geelong on 23 August 2011. Running over 1,100 metres (1,200 yd), with Stephen Baster, Atlantic Jewel won by 1.3 lengths. At her next start, she stepped up to Saturday class and won by just under a length with jockey Michael Rodd easing her up. After winning another race over 1,400 metres (1,500 yd) by 2.8 lengths, Atlantic Jewel stepped up to group one level. The 1000 Guineas over 1,600 metres saw her against multiple group one winner Mosheen, stakes winner Hallowell Belle, and others. Ridden by Michael Rodd, Atlantic Jewel won her first Group One by three lengths at a price of $1.70. She continued to the Wakeful Stakes, a lead up to the VRC Oaks. Starting at a price of $1.26 over 2,000 metres (2,200 yd), she won by seven lengths. Atlantic Jewel would have started a short-priced favourite in the Oaks, but injury ruled her out of the rest of the spring.
Atlantic Jewel returned from her injury in the autumn, running in two races. She made her first start in the group two Sapphire stakes. Ridden by her regular jockey, she won by 3.8 lengths, beating home group one Stradbroke winner Mid Summer Music. Atlantic Jewel's next start was her first test at weight for age. In the All Aged Stakes, she started $1.12 favourite and won by 1.3 lengths, beating home Rain Affair. Atlantic Jewel was to be sent for a spell and saved to race in the spring. However, she suffered a tendon injury which ruled out racing as a four-year-old.[3]
2013-2014: Five-year-old season
Atlantic Jewel's first start of her spring campaign as a five-year-old, and first start for 16 months, came in the Memsie Stakes on August 31, 2013. Despite the long layoff, and a high quality field featuring many of Australasia's best horses, she took her unbeaten run to eight wins with a dominant 2.3 length win without being fully extended. This performance made her a dominant favorite for the Cox Plate. A win against mares in the Stocks Stakes took her winning streak to nine. She then contested the Underwood Stakes against a high-quality field. In the race, she led most of the way; however, she suffered defeat for the first time as It's A Dundeel, the Sydney Triple Crown winner, sat outside her and beat her by a short half-head. The result saw her remain the Cox Plate favourite, albeit with It's A Dundeel close in the markets.