Yanjin jade appraisal agency: 1. Jewelry and Jade Quality Inspection Center: Yanjin City has a jewelry and jade quality supervision and inspection center, and the most authoritative one is the National Jewelry and Jade Quality Supervision and Inspection Center, because this institution was originally affiliated to the Jewelry and Jade Jewelry Management Center of the Ministry of Land and Resources. < br > 2。 Jade wholesale market: general jewelry appraisal bureau, jade wholesale market and large jewelry store can identify the authenticity of jade.