Carat weight pricing and the 4 carat diamond market

https://aged-wiki.win/index.php/Carat_weight_pricing_and_the_4_carat_diamond_market

You'd think a 4-carat diamond would just cost four times as much as a one-carat, but it doesn't work like that; prices jump exponentially because large stones are rarer. At that size, even small differences in clarity or color can swing the price by tens of thousands, so buyers focus heavily on cut quality to maximize sparkle while keeping the carat weight.