Liaoning jewelry and jade national inspection institutions are as follows

Liaoning Gemstone Quality Supervision and Inspection Center/A -3, No.26 Beiling Street, Shenyang

No.29, Beiling Street, Huanggu District, Shenyang, north gate of Liaoning Second Gem Product Quality Supervision and Inspection Center.

Dalian Gold and Silver Jewelry Supervision and Inspection Center/No.68-2 Wansui Street, Dalian

At present, there is no authoritative organization with national testing qualification in Chaoyang.

You can go to any of the above three places for testing.

I hope the answer can help you.