Why Do you need A certification?

In the world of precious stones, the value of a gem is influenced by its unique characteristics, natural rarity, and overall quality. Even gems that look similar can vary greatly in value due to subtle differences. To accurately assess these differences and detect any treatments or enhancements, advanced gemological tools are essential. A certificate provides a detailed disclosure of a gemstone’s attributes, ensuring transparency and trust in any transaction.

For reliable transactions, gemstones should always come with a certificate that confirms their quality. An authentic laboratory report is the gold standard in the gemological world, facilitating trust between buyers and sellers. At Djoyr, we are committed to ensuring that every gemstone is accompanied by a reputable certification.

Certificate Partners

BIS Hallmark

The BIS Hallmark system certifies the purity of gold and silver jewellery in India. Established in April 2000, this hallmarking system provides assurance that jewellery meets the Bureau of Indian Standards' criteria. Each hallmark includes the BIS logo, a purity number, the assaying center's logo, the jeweller's logo or code, and a hallmarking date, ensuring quality and consumer confidence.

Visit their website for more details: [www.bis.gov.in](http://www.bis.gov.in)

Gemological Science International (GSI)

Gemological Science International (GSI) is a prominent global gemological laboratory offering certification services for diamonds and other precious stones. Based in New York, GSI provides detailed grading and appraisal services, utilizing advanced technology to detect treatments and enhancements. Their certification ensures transparency and trust, allowing customers to make informed decisions about their jewellery purchases.

Visit their website for more details: [www.gemscience.net](http://www.gemscience.net)

Solitaire Gemmological Laboratories Ltd. (SGL)

Solitaire Gemmological Laboratories Ltd. (SGL) is an esteemed independent gem testing laboratory recognized internationally for its reliability and integrity. With centers in London, Mumbai, Bangalore, Chennai, Hyderabad, Thrissur, Coimbatore, Pune, and Jaipur, SGL provides trusted certificates that verify a gemstone’s quality and authenticity.

Visit their website for more details: [www.sgl-labs.com](http://www.sgl-labs.com)

International Gemological Institute (IGI)

The International Gemological Institute (IGI) is a leading authority in gemological certification, known for its global reach and commitment to clarity in the buying and selling of diamonds, gemstones, and jewellery. IGI operates in major cities worldwide, including Antwerp, New York, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Tel Aviv, Cavalese, Toronto, Los Angeles, Kolkata, New Delhi, Thrissur, Surat, Chennai, and Shanghai. Their certificates are a testament to their dedication to consumer confidence and thorough analysis.

Visit their website for more details: [www.igiworldwide.com](http://www.igiworldwide.com)

HKD Diamond Laboratories, Canada

Founded in 1990, HKD Diamond Laboratories Canada offers secure and reliable gemological services to jewellery manufacturers, retailers, and wholesalers. With state-of-the-art laboratories in Toronto, Mumbai, and Bangkok, HKD is renowned for its detailed diamond reports and branded jewellery certifications. Their reports feature advanced security measures like digital diamond plots and SealSafe Holograms to ensure authenticity and prevent tampering.

Visit their website for more details: [www.hkdlab.ca](http://www.hkdlab.ca)

Gemological Institute of America (GIA)

The Gemological Institute of America (GIA), established in 1931, is a global leader in gemology. Known for developing the 4Cs—cut, clarity, color, and carat weight—GIA has set the standard for assessing diamond quality. GIA’s comprehensive reports help buyers and sellers make informed decisions, ensuring accuracy and trust in gemstone transactions. The GIA also offers educational programs in gemology, diamonds, and jewellery design.

Visit their website for more details: [www.giaindia.in](http://www.giaindia.in)