What does the word double mean stamped jewelry?

In stamped jewelry, the term "double" typically refers to a piece that features two layers or two identical designs, often creating a more substantial or visually impactful appearance. It can also indicate that a piece is made from two layers of metal, enhancing durability and depth. Additionally, "double" may imply that the item is stamped with two sets of markings or inscriptions, adding to its uniqueness.