I suggest you go to a formal and authoritative place, and the accuracy can reach 100%. I suggest you go to Heilongjiang Jewelry and Jade Appraisal Center, Civil Aviation Road, Xiangfang District, Harbin, 50 meters west of Insurance Building and south of it. You can call 1 14 to check the location before you go.

The specific costs are priced according to the materials. There shouldn't be much money. It only takes 30-50 yuan to test diamonds.