International Testing Certificate
We collaborate with several international jewelry testing institutions, allowing us to send finished pearl jewelry to our laboratory for testing and receive corresponding certificates.
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GRC Certificate
A GRC certificate is a jewelry identification certificate issued by the GRC Gemological Laboratory, primarily used for authenticating and determining the properties of gemstones, precious metals, and finished jewelry. This certificate is issued by the Sino-Thai joint venture GRC laboratory, whose Greater China technical director has been engaged in identification work since 2005. The laboratory has accumulated testing data on over 500,000 gemstones and has branches in Beijing, Guangzhou, and Shenzhen, China. GRC certificates are currently the most common type of certificate found on e-commerce platforms (such as AliExpress).
Query website: www.grclab.vip/html/query.html
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GUILD Certificate
A GUILD certificate is a jewelry identification certificate launched in 1980 by the American GUILD Gemological Laboratory, founded by gemologist Charles Carmona. It is applicable to the testing and grading of all gemstone varieties. GUILD certificates employ a triple anti-counterfeiting technology: a unique pattern, encrypted microprinting, and ultraviolet anti-counterfeiting markings. Under magnification, the words "GUILD GEM LAB" are visible in the background pattern on the left page of the certificate. GUILD is an international gemological laboratory that holds triple accreditation from CMA (China Metrology Accreditation), CNAS (China National Accreditation Service for Conformity Assessment), and ilac-MRA (International Laboratory Accreditation Cooperation).
Website for verification: https://guild.guildgemlab.com/
PSL Certificate
Japan Pearl Science Laboratory is one of the world's most authoritative institutions for pearl identification and grading. It launched the world's first pearl grading system in 2000 and holds significant market influence, particularly in the grading of Akoya pearls for the "Hanadama" and "Tenjo" grades.
Website for verification: sinjuken.co.jp
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Get in touch with us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
+86 18140179391
We sell directly from pearl farms. We have high-quality pearl farming bases and control the quality of pearls from the source, so our prices are affordable.
Links
Loose Pearls
Pearl Strands
Pearl Jewelry
About Us
Address
8th Floor, Building B, Block 2, China Gold & Jewelry Exchange Center, Jinzhou Road, Jinniu District, Chengdu, Sichuan Province, China
Contact Person: Josie
Contact Person: Sean