1. Gilde certificate, as a prestigious institution in the field of gem appraisal, has formed a unique appraisal method and standard in long-term practice, and its history and experience provide strong support for the authority of the certificate.

2. The team members are all senior gemologists and jewelry experts. They have rich appraisal experience and profound professional knowledge, and can accurately evaluate the quality, authenticity and value of gems, and ensure that each certificate has a high degree of accuracy and reliability.

3. Its appraisal results and evaluation reports are trusted by many jewelers, collectors and investors, and become the authoritative reference basis in the industry. This further consolidates the authoritative position of Gilder certificate in the field of gem identification.

To sum up, Gilder certificate is authoritative.