Guides
A 1 carat loose diamond price depends on origin, shape, and the 4Cs. There is no single 1 carat price.
Shoppers search “1 carat” and often mean anything near that weight. Sellers price 1.00 ct differently from 0.95 ct, especially for natural diamonds, because demand clusters on the round number.
Face-up size barely changes across that gap on a round. If the budget is fixed, compare 0.90–0.99 ct with 1.00–1.10 ct and see whether the premium buys something you can see.
A certified 1 carat lab-grown diamond and a certified 1 carat natural diamond with similar color and clarity do not land in the same price band. Check both catalogs with the same filters before you decide the budget is too low or too high.
Within one origin, cut, color, and clarity still move the quote. An Excellent-cut G/VS2 is not priced like a Good-cut I/SI2.
Rounds usually cost more than ovals, pears, and cushions at the same carat and grade because more shoppers want rounds. Fancy shapes can look larger at 1 carat because the outline is longer.
Do not use a round price guide to judge a pear. Filter the shape you are actually buying.
On Carat Mate the listing price is the price for that certified stone in USD. Sort and filter inside a carat range instead of trusting a blog average.
Averages go stale. The certificate and the current listing do not.
Carat Mate lists certified loose diamonds for shoppers in the United States, Canada, the UAE, London, and Australia. Prices are in USD everywhere. We ship to the United States, Canada, the UAE, London, and Australia.
