Each diamond is unique with its own, very distinct characteristics! To make the best purchase, you must know all the details of the stone. At St-Onge, all our diamonds are sold with a certificate issued by theGIA. The GIA (Gemological Institute of America) is the most renowned laboratory in the world for the classification of diamonds and the identification of precious stones. Our Lab Grown diamonds are sold with a certificate issued by the IGI (International Gemological Institute).

Both GIA and IGI reports give the complete description of the diamond, including its colour, its weight, its dimensions and its cutting style. The report number is engraved on the diamond girdle.

CanadaMark certified natural diamonds are responsibly mined in the Northwest Territories of Canada. All mines participating in the CanadaMark program must meet Canada's strict environmental regulations, and many of them even go beyond. CanadaMark prides itself on their transparency throughout the mining process. In fact, all CanadaMark diamonds are independently tracked at every stage, from the mine of origin to the polished stone. CanadaMark diamonds are a promise of purity, responsibility and authenticity.

Each diamond features a micro laser inscription giving you confidence in its origin and history.

An appraisal certificate for insurance purposes is offered to you with any jewelry purchase. This certificate describes in detail the purity of the gold, the stone(s) used as well as their weight, clarity and colour and finally the replacement value in the event of loss or theft.

The certificate is written by one of our diamond experts with the St-Onge seal. Providing this certificate to your insurance company will give you peace of mind.