The Chinese fighter initially downed Olympic champion Anastasija Zolotic of the United States in the semi-final before matching Jones in the women's under-57-kilogram final.

Jones was entering the showdown in high spirits having just swept aside Turkey's Hatice Kubra Ilgun.

However, Luo's overbearing 12-centimetre height advantage gave the British fighter a challenging task.

Both athletes took a round but Luo triumphed in the third to maintain a perfect World Taekwondo Grand Prix record heading into the final event in Riyadh, Saudi Arabia.

Magda Wiet Henin of France sealed her second Grand Prix title this year thanks to a win over Serbia's Aleksandra Perisic.

Britain's Lauren Williams took bronze to equal her performance from the European Championships while Czech Republic's Petra Stolbova earned her first Grand Prix medal by securing the other bronze.

In the men's under-68kg class, Jin Ho-jun of South Korea claimed his first gold medal in the series after bettering Jordan’s Kareem Zaid at the Manchester Regional Arena.

Jin, who claimed bronze in Rome, outmatched American debutant Khalfani Harris in the semi-final.

Meanwhile, Zaid's path to the final was aided by semi-final opponent Bradly Sinden of Britain withdrawing due to injury.

The competition is due to conclude tomorrow.