Jewels MMA event in 2011
Jewels 12th Ring was a planned mixed martial arts (MMA) to be held by MMA promotion Jewels. The event was planned to be held on  11, 2011 (2011--) at Shinjuku Face in Kabukicho, Tokyo, Japan but it was cancelled a few hours before the start due to the 2011 Tōhoku earthquake and tsunami.
Background.
The first two bouts of the event were disclosed on  , 2011 (2011--). Four more bouts were announced on  17, 2011 (2011--), including the addition of American fighter Lisa Ellis as an opponent for Jewels lightweight champion Ayaka Hamasaki in a special rules non-title bout. The rest of the card was revealed on  , 2011 (2011--), which included the debut in MMA of South Korean boxer Ji Yun Kim and a kickboxing match. It was announced the next day that Ellis had suffered an injury in training and that fellow Bellator Jessica Aguilar would face Hamasaki instead.
The weigh-ins took place on  10, 2011 (2011--), with American fighter Danielle West missing weight and being penalized with a red card (point deduction) in her bout against Mongolian Esui. Fighters Sakura Nomura and Kim did not take part in the weigh-ins and instead were going to be weighed on the day of their match.
Announced card.
 Miyoko Kusaka (, Grabaka Gym) vs. Yuka Okumura (, Soul Fighters Japan)
 Rina Tomita (, AACC) vs. Sadae Suzumura (, Cobra Kai MMA Dojo)
 Esui (, Smash Alley Gym) vs. Danielle West (, Fuzion MMA)
 Miku Hayashi (, Bungeling Bay Spirit) vs. Suzuna Nakamura (, Sakigake Juku)
 Shizuka Sugiyama (, Zendokai Yokohama) vs. Mayumi Aoki (, Gamurannac)
 Sakura Nomura (Club Barbarian Impact) vs. Ji Yun Kim (CMA Korea Team Posse)
 Mika Nagano (, Core) vs. Emi Murata (, AACC)
 Ayaka Hamasaki (, AACC) vs. Jessica Aguilar
References.
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