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Is the emerald CGRL certificate authoritative?
Jade CGRL certificate has certain authority. CGRL is a professional jewelry testing institution with corresponding qualifications and certifications, which can provide authoritative jewelry testing services and issue certificates that meet industry standards. However, when consumers buy emeralds, they need to judge and identify them from other aspects besides certificates, such as the appearance, refractive index, specific gravity and other indicators of gems, and also consider the source and historical records of emeralds.