2015: two-year-old season On 29 November 2015 Jeweler began her track career in a contest for previously unraced juveniles at
Kyoto Racecourse. Racing over 1800 metres on
firm ground she won from Admire Kizuna and thirteen others.
2016: three-year-old season On her three-year-old debut Jeweler was matched against male opposition in the Grade 3
Shinzan Kinen over 1600 metres at Kyoto on 10 January. Starting the
3.1/1 second favourite in a fifteen-runner field she finished second to the colt Logi Cry, beaten a neck by the winner. On 5 March she started favourite the
Grade 3 Tulip Sho (a major trial race for the
Oka Sho) over 1600 metres at
Hanshin Racecourse. After leading in the straight she was caught on the line by the fast-finishing
Sinhalite and beaten a nose, the smallest possible official margin. Kenichi Fujioka said that the filly had run well after her two-month layoff and added that he felt that she had been "targeted" by the jockeys of the other runners. In the Oka Sho at the same track on 10 April the filly started 4/1 third choice in the betting behind the 2015
juvenile champion Major Emblem with Sinhalite being made the second favourite. The other fifteen runners, none of whom started at less than 20/1 included Solveig (
Fillies' Revue), Blanc Bonheur (
Hakodate Nisai Stakes) and Denko Ange (
Artemis Stakes). After racing at the rear of the field in the early stages Jeweler was switched to the wide outside on the final turn and began to make rapid progress in the straight. She reeled in the leaders with a sustained run, caught Sinhalite in the final stride and won by a nose with At The Seaside and Major Emblem in third and fourth. Fujioka commented "Her conformation tells us that she should suit longer distances so I have high hopes for her to do well in the remaining two legs of the
Fillies’ Triple Crown". Jeweler missed the
Yushun Himba through injury and was off the course for more than five months before returning for the Rose Stakes (a major trial for the
Shuka Sho) over 1800 metres at Hanshin on 18 September. She started second favourite but ran poorly and came home eleventh of the fifteen runners behind Sinhalite after which both her trainer and jockey suggested that she had been unsuited by the prevailing
heavy ground. In the Shuka Sho at
Kyoto Racecourse in October she produced a much better effort as she finished strongly to take fourth place behind
Vivlos, beaten just over a length by the winner. ==Racing form==