Harold Weinstein Ltd.

Jewellery appraisals & diamond grading in Toronto

Established in 1977

Toronto’s independent gemmological laboratory since 1977. Clear, considered assessments of diamonds, gemstones and fine jewellery.

Diamond ring and jeweller’s loupe on blank stationery for jewellery appraisal

Jewellery appraisals

Independent appraisal reports for jewellery, diamonds and gemstones. Contact our Toronto team to discuss your item and the purpose of the appraisal.

Loose diamond with a jeweller’s loupe and tweezers for diamond grading

Diamond grading

Diamond assessment and grading from our Toronto laboratory. Contact HWL to discuss a diamond you would like examined and the report you need.

Coloured gemstones beside a jeweller’s loupe for gemstone evaluation

Gemstone evaluation

Laboratory examination and evaluation of coloured gemstones by HWL gemmologists. Contact us to discuss your stone and the type of assessment you need.

About Harold Weinstein Ltd

Independent gemmologists and appraisers

Established in Toronto in 1977, Harold Weinstein Ltd is an independent gemmological laboratory. We provide jewellery appraisals, diamond grading and coloured gemstone evaluation from our laboratory at 27 Queen Street East.

Contact our Toronto laboratory

I hereby agree that this data will be stored and processed for the purpose of establishing contact. I am aware that I can revoke my consent at any time.*

Please fill in all the required fields.
Message was successfully sent

1977

Established

Toronto

27 Queen Street East

Independent

Gemmological laboratory
Information icon

We need your consent to load the translations

We use a third-party service to translate the website content that may collect data about your activity. Please review the details in the privacy policy and accept the service to view the translations.