Reliable. According to Aiqi, Kashijia's diamond ring is the jewelry of Shenzhen Kashijia Jewelry Co., Ltd., which has been recognized by the industrial and commercial department and has a business license. 24A, Building 3, East Bank of Honghu Lake, Jinwen North Road, Cuizhu Street, Luohu District, Shenzhen, is a formal company, and its business scope is gold and silver jewelry, precious stones, diamonds, jade articles and watches.