GSI is a globally recognized gemological laboratory that provides grading and certification services for diamonds and fine jewellery. A GSI certificate confirms a gemstone’s key attributes—cut, clarity, color, and carat weight—offering assurance of the diamond’s authenticity, quality, and ethical sourcing.
SGL is an independent, international certification body known for its accurate testing and grading of diamonds and gemstones. An SGL certificate serves as a trusted verification of a stone’s genuineness and specifications, ensuring complete transparency and trust for both jewellers and customers.