This is a nice idea from Pica Pica Jewellery; they are based on antique glass vials, along with an eighteen inch long chain. These vials can be used to put any keepsake in, that is of course providing that they will fit into small glass vial.
For anyone who likes the idea, but fails to think of anything to store in these keep sake vials, then there is no need to worry as they designer also sells these already filled with shells, beads, coral and other items. Whatever version is chosen, they come in a nice box, which is always a good touch when jewellery is being given as a gift.
Prices start at $22 for standard and $28 for filled.
Source [Green Grechen]