Abstract: A fastener g to the invention is used upon being attached to an ornamental device and is freely rotatably connected to a main body of the ornamental device. A pin extending from the connected portion in one direction and a lever of the pin extending from the connected portion in another direction are provided, and the distal end of the pin is biased toward the main body about a rotary shaft at the connected portion. The pin has a difference in level, namely a curved portion, which shifts the axial direction of the pin near its distal end toward the main body. An ornamental device according to the invention has a fastener attached to a main body thereof. The fastener is freely rotatably connected to the main body and is provided with a pin extending from the connected portion in one direction and a lever of the pin extending from the connected portion in another direction, wherein the distal end of the pin is biased toward the main body about a rotary shaft at the connected portion.

Abstract: An adornment device including a flexible cord using a plurality of wires as a core and a flexible coating for coating the cord so as to impart flexibility to the cord; a retainer having a cord-threading hole through which the cord is inserted once before a clasp and through which the cord is inserted again after being bent at a bending point; and a setscrew which, by making use of the characteristics of the flexible coating material, is adapted to secure the cord to the retainer while adjustment of the tension of the cord is being made.