Diamond Price Estimator

How the estimator works, and how to read it

Every time you ask, we scan every diamond for sale across the retailers we track and find the ones that match your spec: same shape, a similar carat size, a nearby color and the same clarity. From that group we take the middle price per carat (the median) and multiply it by your carat weight. The number you see is the going rate across the market right now for a stone like that. It is not a quote and it is not a forecast, just a snapshot of where real prices sit today.

Confidence tells you how many similar diamonds we had to work with. High confidence means more than 100 matches, so the typical price is stable and you can trust it. Medium means 30 to 99 matches, directionally right but the number can shift by around 10% in either direction. Low means fewer than 30 matches, which is common for unusual specs. With low confidence, one retailer's pricing can skew the median, so treat the result as a rough compass rather than a target.

The low to high range shows where the middle 50% of similar diamonds are priced. A wide range (say 60% to 140% of the typical price) means retailers disagree on what this spec should cost, usually because cut quality or lab varies within the group. A narrow range means the market broadly agrees, which is normal for common specs like a 1ct round G VS1.

The estimator cannot see cut grade, polish, symmetry, fluorescence, grading lab or provenance, and each of those can move the real price materially. Two diamonds with identical shape, carat, color and clarity can easily be 30% apart for legitimate reasons. Use the estimate as a sanity check: if a retailer quotes you 20% above the typical price, ask what is above spec, and if they are 20% below, ask what has been left off.