Vintage set from Kramer
Sets like this can be pricey, and obviously if you are buying one either as a collector or just to wear out from time to time, you want to make sure there are no missing crystals or loose stones. While you can probably find a replacement part (cheap vintage items with missing stones can be used for their replacement parts), the more pristine a piece is, the more beautiful and valuable it is. You also want to make sure the piece is marked, as this one is, so you can authenticate the origin and approximate date.
If anyone has a Kramer piece that was produced for Christian Dior please send a photo!