Product Description
This listing is for one laminated jade/gem/jewelry certificate of authenticity issued by Gold and Silver Jewelry Quality Supervision and Inspection center of Henan Province (Nanyang branch).
• All of our natural jade gemstone products can be certified. One certificate is for one particular item only.
• If the item you are purchasing comes with a certificate, you do not need buy the certificate again. If it does not include a certificate or the certificate is a sample, you can buy one through this listing.
• We usually send your item to the testing center within 24 hours after payment is received. The certificate will be shipped with the item together.
• We must send the item to testing center to get it certified, so we can not get a certificate for your item if it is shipped out.
To verify the certificate, go to its official website (www.jyzbjc.com) and enter the certificate number and 4-digit verification code, the exact picture and experimental data will be displayed on the verification result. 
To understand the meanings of the logos of CMA, ILAC-MRA, and CNAS on a Chinese jade certificate: 
CMA: This stands for China Metrology Accreditation, which is a certification organization in China that is responsible for ensuring the accuracy and reliability of measurements taken in various fields, including gemstones and jade. Only certificates issued by CMA certification organizations have legal effect in China. Each organization has its own certification number shown below the CMA logo. 
ILAC-MRA: This stands for International Laboratory Accreditation Cooperation Mutual Recognition Arrangement. This is an agreement between accreditation bodies around the world to recognize each other's accreditation programs, ensuring that test results and certificates issued by accredited laboratories are widely accepted. 
CNAS: This stands for China National Accreditation Service for Conformity Assessment, which is the same organization as CAL mentioned above. The term may appear on a jade certificate to indicate that the testing laboratory is accredited by this organization.
In summary, these terms on a Chinese jade certificate indicate that the laboratory that tested the jade is accredited by relevant organizations in China and/or internationally recognized accreditation bodies. This gives assurance that the testing was conducted according to accepted standards and that the results are reliable.
*P.S. There are more than one hundred of organizations (testing centers/labs/agencies) that can issue a legal jade certificate in China, and more than 20 of them have testing centers/labs/branches in Nanyang City where our warehouse is located in. We chose one of the most reputable organizations and joined the membership program to get big discount on testing cost. The following organizations also have branches/testing centers in Nanyang City and their certificates are also available at extra cost.
1, (Shenzhen) Zhongwei Jewelry and Jade Quality Inspection Center (Nanyang Branch), www.zwjczx.com
2, (Guangzhou) Natural Inspection Gems Jewelry Testing Center (Nanyang Branch), www.nigc.com.cn
3, Guangzhou Zhonggong Jewelry Testing Center (Nanyang Branch), www.gtc168.com
4, Beijing Guoshou Jewelry Testing Center (Nanyang Branch), www.njc.com.cn
5,(Beijing) Guojian Zhongshi Gem & Jade Quality Inspection Center (Nanyang Branch), www.zsjcgw.com
6, Xingjiang Zhongzheng Jewelry & Jade Testing Center (Nanyang Branch), www.xjzhongzheng.com
7, (Xinjiang) Zhongshou Jewelry and Jade Quality Inspection Center (Nanyang Branch) www.xjzszj.com
8, Xingjiang Zhongdizhi Jewelry Testing Center (Nanyang Branch), www.xjzdztc.com
9, (Xingjiang) Zhongzhi Jewelry Gemstone Testing Center (Nanyang Branch), www.国检zzjc.com
