This is a beautiful vintage Art Deco necklace of graduated rose quartz beads with small clear glass spacers. The quartz beads are a lovely delicate shade of pink. The spring ring catch is marked Sterling Germany (the word Germany is incomplete).
The necklace measures 15 inches long and it is in very good condition. It is on what I believe is the original string which is a bit loose. It would probably be a good idea to restring it, and you could at that time, lengthen it by adding additional beads at the back.