The first floor of the affiliated building of the Ministry of Land and Resources, Mutton Hutong, Xicheng District. Luzhou Jade Appraisal Center is a national jewelry and jade quality inspection center, located on the first floor of the affiliated building of the Ministry of Land and Resources in Mutton Hutong, Xicheng District, which can detect and identify precious stones and jade articles. The testing scope of Luzhou National Jewelry and Jade Quality Inspection Center includes: jewelry and jade identification, diamond grading, precious metal purity testing and other special testing of solid materials.