Canada's most respected gemmological laboratory, Harold Weinstein Ltd., provides gemmological and jewellery-dependent services, including jewellery appraisals, (jewelry for our American clients), diamond grading, and gemstone evaluation and identification.

For over thirty-five years, our gemmologists have been providing professional expertise to major law firms, government agencies, insurance companies, national jewellery chains, international auction houses, fine independent jewellers and individual jewellery buyers. more... See more text