1, total jewelry quality.

2. The shape and color of jewelry.

3, jewelry clarity.

4, jewelry cutting level.

Yunnan Geology, Mineral Resources and Jewelry Testing Center, established on 200 1, is located in Kunming, Yunnan Province. Is a professional and technical service-oriented enterprise, twice participated in bidding projects, with independent legal personality. It is a product quality inspection institution that has passed the strict examination of Yunnan Provincial Market Supervision Administration and can independently undertake the third-party fair inspection.