CMA is a short -abbreviation of China's measurement certification. It does not mean that the certification is not the identification certificate. The CMA is a certification agency. The appraisal agency that can do jewelry appraisal in China must obtain the CMA certification to issue an appraisal certificate. It is still recommended to buy a GIA certificate diamond. GIA is the logo of the American Gem Institute. GIA is one of the most authoritative appraisal agencies in the world and a non -profit international testing agency.
CMA is a short -abbreviation of China's measurement certification. It does not mean that the certification is not the identification certificate. The CMA is a certification agency. The appraisal agency that can do jewelry appraisal in China must obtain the CMA certification to issue an appraisal certificate. It is still recommended to buy a GIA certificate diamond. GIA is the logo of the American Gem Institute. GIA is one of the most authoritative appraisal agencies in the world and a non -profit international testing agency.