This is a really beautiful set. I believe it is circa 1960's. The bracelet is a double omega or snake chain with light blue navettes and round cut glass. The clasp is a really pretty art nouveau style box clasp. The choker is one chain with the same design but the clasp has been updated. It has a hook closure where i assume a box clasp used to be. It does make it easier to adjust the length.

Choker is 15"
Bracelet length is 7"

This item is sold from a vintage boutique in San Antonio, Texas.