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M.Kawasaki Trading Co., Ltd. has been active in whole sale gem set jewelry in Japan for more than 50 years. We also exhibit jewelry shows in Hong Kong for more than 10 years. We make high quality gem set jewelry with Emerald, Ruby, Sapphire, Jade, Tourmaline, Diamond and etc. We certify our gem stones with highly recognized gem laboratories, such as GIA, GRS, SSEF and Gubelin.