Lord Voldemort's Horcruxes are the elements to destroy in order to annihilate him. There are 7 of them and throughout the Harry Potter saga will try to find them to stop the dark mage: Tom Riddle's diary, Gaunt's ring, Salazar Slytherin's medallion, Helga Hufflepuff's cup, the tiara by Rowena Ravenclaw, Nagini, and finally Harry Potter. These metallic bookmarks in the form of small clips will help you not to lose the page again.
Harry Potter Licensed product.
Reference : NN8773