When buying a diamond, a trusted certificate is your best proof of quality. This guide walks through the key diamond grading labs — GIA, IGI, and HRD — and explains why you should ask for certification, especially for stones over 0.30 carats. With this knowledge, you can ensure authenticity, quality, and peace of mind in your purchase. https://dgmnews.com/posts/understanding-the-4cs-of-diamonds/