What you want to ask is where can I mortgage a diamond ring in Sanya? You can go to Yin Da Pawnshop (Sanya Branch) and Sanya Guojia Pawnshop Co., Ltd. According to the Baidu map.

1. Yin Da Pawn (Sanya Branch) is located at Jiefang Road, Tianya District, Sanya City (zip code: 572029). It is a large-scale comprehensive enterprise integrating small loans, pawn, auction, jewelry sales, real estate development and property management.

2. Sanya Guojia Pawnshop Co., Ltd. is located at No.528 Hedong Road, Tianya District, Sanya City, Hainan Province and Longhai Style Town, Longhai Second Road, Haitang District, Sanya City. The company's business scope includes: movable property pledge pawn business; Property pledge pawn business; Real estate mortgage pawn business; Sales of absolute items within the limit; Identification, evaluation and consulting services; Other pawn business approved according to law.