IGI vs GIA Certificates: Which to Trust for Lab-Grown Diamonds
For IGI vs GIA on lab-grown diamonds, the short version is this: both are real, independent grading labs, but as of late 2025 they report lab-grown stones very differently, and that difference is exactly what trips up shoppers. At Vanhess Jewellery in Coquitlam, BC, we only sell certified stones, and the certificate question comes up at the counter almost every day now that lab-grown is so common. Here is what each lab does and how to read what you get. A diamond certificate (the trade calls it a report, not a certificate, but everyone says certificate) is an independent lab's...
