1, Xi Geological Survey (Hepingmen), address: Yanta North Road, Xi 100.
2.Xi 'an Jewelry Appraisal Center (Gaoxin Road), Address: 7th Floor, Quality Inspection Building, No.26 Keji Road, Xi High-tech Zone (200m east of the intersection of Gaoxin Road and Keji Road).
3.Xi Institute of Geology and Mineral Resources (Nanshaomen), Address: No.438 Youyi East Road, Xi.