The necklace can be firmly grasped by using the adsorption of plastic wrap itself, but this method is not suitable for long-term storage. In fact, whether jewelry or jewelry is exposed to the air for a long time, it is easy to be oxidized and contaminated with dust, which affects its quality. Therefore, if conditions permit, it is best to choose sealed storage. The split jewelry box mentioned above is a good choice. Here is a very cheap storage object: transparent PE film box, a treasure is about one yuan. This material has good toughness, and the transparent packaging is clear at a glance. So don't use plastic wrap, it won't be stored well for a long time, I hope it can help you.