native american navajo jewelry wholesale Is the diamond sold by Kaohsiung Diamond Jewelry Co., Ltd. in Kaohsiung City?

native american navajo jewelry wholesale When traveling in Taiwan, the tour guide took the golden diamond jewelry on the second floor of Yixin Road, Qianzhen District, Kaohsiung City, Taiwan. He bought a diamond and had a gem appraisal. Is it genuine? Is this store reliable?