Abstract: A necklace which openably closes at clapsed ends meant to be worn centered at the nape of the wearer's neck is provided with a decorative element mounted on a slider which is slidably received on the necklace. The internal transverse sectional profile of the slider at least generally corresponds to the external transverse sectional profile of the chain or strand of the necklace, so that the decorative element always will slide under the influence of gravity to the frontal lowest part of the necklace, but will remain having a facing-outward disposition generally centered heightwise on the chain or strand of the necklace. By preference the chain or strand of the necklace is an elongated flexible element of flattened oval or rectangular transverse sectional shape.