It's known as a "full parure" because the set is complete with necklace, matching earrings, bracelet, and brooch and YES, they wore all at once back then.

It's a "Jewel Creations" set. It's not marked but I may be the last living expert on this company! I was a very good customer of theirs from the mid 60s to the 90s when they closed. Jewel Creations was a place where you bought empty "frames" and picked whatever stones you wanted to add. I did not "make" this set, it came to me by other means. It's easy to see many of the faux pearls have been replaced. The colors vary a bit but I added some tint to even them out. There is no doubt that more will fall out so I will include some loose pearls to add in case any are lost ("Jewel Glue" or "Gem Tac" is the best glue for this). The set shows some wear on the reverse where it met skin, but all pieces are in wearable condition. Still, I priced it lower than the usual vintage full parure! I will also include comfort pads for the clip-on earrings. Will come in more than one gift box.
Many of their items are marked "Dodd" but this set is not marked.
Try Googling "Dodds vintage costume jewelry" to find more info on this company.

old money core, bougie,

This item is sold from an excellent, highly rated vintage boutique in Northfield, OH.