Our appraisals are performed by an independent third party jewellery appraisal service. GS Laboratories is an independent gemological laboratory specializing in profession diamond grading and jewellery appraisal services. Their Canadian operation, based in Toronto, has become the largest and most prominent diamond and jewellery grading laboratory in Canada. GS Laboratories employs highly qualified certified gemologists using state-of-the-art gemological equipment to ensure an accurate, professional appraisal. For more information, please visit their website at www.gemscan.com.