Jinda jewelry city. Baidu map query shows that Zhaoan Diamond Ring Testing Center is located in Jinda Jewelry City, Zhaoan County, Zhangzhou City, Fujian Province. The center is specialized in diamond detection and jewelry appraisal, cooperates with internationally renowned diamond appraisal institutions, has professional testing equipment and experienced technical team, and can provide consumers with high-quality diamond ring detection services. If it is necessary to test the quality and authenticity of diamond rings, consumers can go to the center for testing.