How do I know what costume jewelry is worth money?

To know what costume jewelry is worth money, one option is to conduct some online research. You can read articles on trusted websites to find out what types of pieces and makers are highly sought after. Another approach is to peruse the sold sections of reputable online platforms to get a feel for the selling prices of different types of jewelry. On 1stDibs, explore a diverse assortment of jewelry from some of the world's top dealers.