Coro Gold Knot Brooch Earring Set Vintage Pin Set Demi Parure Original Box Clip Earrings Mother's Day Birthday Costume Jewelry Set. Here is a beautiful Vintage Coro Craft Gold Knot Brooch and Earring Set Demi Parure in Original Box. They are from my Grandmother's estate jewelry collection and they are lovely and sparkly. They are made of a goldtone metal. The earrings are clip on type, and they have little shiny bumps on them that reflect the light and make them sparkle, as well as the brooch does also. The brooch has a simple fold under type clasp. The brooch is large measuring 2" by 2" the earrings are aprox 1" long. This is a wonderful Art Deco type design. They are unsigned. These would make a great gift for Mother's Day, Birthday or any other gift occasion. If you have any questions just message me and I'll be happy to help you. Thank you for looking at this lovely set.