Buying a diamond used to mean walking into a showroom and hoping the jeweler was giving you a fair deal. Today, the "secret sauce" to saving thousands is shopping online, where lower overhead and direct-to-consumer models can slash prices by up to 40% compared to traditional retail.

: It aggregates listings from various wholesalers and uses AI to grade the "deal" quality, helping you find hidden gems with high specs but lower-than-average prices.

If your primary goal is the lowest possible price tag, these two retailers are top contenders.

Whether you are looking for a natural stone or a lab-grown alternative, here are the top retailers and strategies to maximize your budget. 1. Best Overall Value: Rare Carat