TOUS Oursin necklace with a dark silver chain, a medallion with bear in sterling silver and black enamel with an oval silver vermeil ring. Pendant size: 16 mm. Necklace length: 45 cm, with ring at 40 cm. Sterling silver plated with 18kt gold with a thickness of 3 to 5 microns and with no other metal between them. (Dark Silver: Sterling silver covered with a layer of ruthenium, a mineral that gives strength and shine.) Production technique: Casting.