Bluebeard's* key which leads to the room that you absolutely may not enter...
*"Bluebeard" is a French folktale (1697), the most famous surviving version of which was written by Charles Perrault. The tale tells the story of a wealthy man in the habit of murdering his wives and the attempts of one wife to avoid the fate of her predecessors.
The length is adjustable: 70 to 77 cm.
This jewellery is a one-of-a-kind piece. Can be repeated on request, but keep in mind that it would never look exactly the same.
Please let me know if you would like to see more photos of it, or if you have any questions.