Belly's engagement ring on The Summer I Turned Pretty is going viral for its size, but how much does it cost? Turns out Jeremiah (Gavin Casalegno) doesn't have to worry about being in too much debt from his additional college semester. The ring he gave Belly (Lola Tung) during the Wednesday, July 23, episode of the hit Prime Video series was identified as Catbird's Diamond Fizz Ring Sparkler, which is crafted in 14k gold and is priced at $298.