If you are purchasing a Canadian diamond from a Code Signatory member you should ask for a polished diamond certificate/report and a receipt which contains the following information:
If you are purchasing a Canadian diamond from a retailer who is not a Code Signatory member you still should ask for substantiation and assurance, in writing, that the diamond is from a Canadian mine, along with the usual polished diamond description, return policy and receipt.
All retailers, including non-Signatory members of the Code, who are making a claim that a diamond is from a Canadian mine should be able to substantiate their claim. The inability to substantiate such a claim could find the retailer in contravention of the Competition Act. If you have a complaint, you may register it with the Competition Bureau by contacting the toll-free number 1-800-348-5358 or visit www.competitionbureau.gc.ca for the complaint form (Complaint form - Competition Bureau Canada).
Consumers need to know that there is no central database for Canadian diamond identification numbers. Click here for more info.