The listing, Lot of Jewelry, fit thru the Collar, Strings of Pearls, I have no idea if the pearls are real has ended.
I'm not quite sure what these are, but my best guess would be that the long one, approx. 34" long would wrap thru the collar, while the plain pearl one wraps around your collar buttons, and the third has clips on the both sides. Pretty, and I'm hoping, collectible to someone out there. please ask any questions and thank you for looking.