An ornament for being strung on an elongated member, such as a chain, string or bangle, of a bracelet or necklace, said ornament comprising • a shell (401, 501) having a cavity, • a first friction element, said ornament being able to be arranged in an un-assembled configuration, in which said first friction element is un-attached to said shell, and an assembled configuration, in which said first friction element is at least partly located in said cavity so as to be attached to said shell, and • a through hole, said through hole defining in said assembled configuration an open passageway extending from one opening of the shell, through the shell and to another, opposite opening of the shell, said through hole preferably allowing said ornament to wreathe the elongated member of the bracelet or necklace when said ornament is strung on said bracelet or necklace, wherein said first friction element comprises • a first retaining part, which is arranged in said cavity when the ornament is in the assembled configuration, and • a first friction part attached to the first retaining part and comprising a first gripping surface for frictionally gripping a surface of the elongated member when the ornament in the assembled configuration is strung on the elongated member, whereby the ornament, when the ornament in the assembled configuration is strung on the elongated member, can be releasably secured in a first location on the elongated member and be relocated by a sliding movement along the elongated member to be releasably secured at a second location, wherein the first friction part in an un-deformed state and the first retaining part in an un-deformed state have different material and/or mechanical properties in the unassembled configuration of the ornament, a difference in hardnesses preferably acting to prevent the first friction element from being detached from the shell during said sliding movement, wherein said first friction part in an un-deformed state and the first retaining part in an un-deformed state have different indentation hardness, characterized in that the shell (401, 501) has an outer surface and an inner surface and further comprises two side walls (461, 462) extending from the inner surface of the shell, the two side walls being configured to grip the first friction element and assist in securing the first friction element in said cavity, so that the first friction element is prevented from being detached from the shell during said sliding movement. • a shell (401, 501) having a cavity, • a first friction element, said ornament being able to be arranged in an un-assembled configuration, in which said first friction element is un-attached to said shell, and an assembled configuration, in which said first friction element is at least partly located in said cavity so as to be attached to said shell, and • a through hole, said through hole defining in said assembled configuration an open passageway extending from one opening of the shell, through the shell and to another, opposite opening of the shell, said through hole preferably allowing said ornament to wreathe the elongated member of the bracelet or necklace when said ornament is strung on said bracelet or necklace, wherein said first friction element comprises • a first retaining part, which is arranged in said cavity when the ornament is in the assembled configuration, and • a first friction part attached to the first retaining part and comprising a first gripping surface for frictionally gripping a surface of the elongated member when the ornament in the assembled configuration is strung on the elongated member, whereby the ornament, when the ornament in the assembled configuration is strung on the elongated member, can be releasably secured in a first location on the elongated member and be relocated by a sliding movement along the elongated member to be releasably secured at a second location, • a first retaining part, which is arranged in said cavity when the ornament is in the assembled configuration, and • a first friction part attached to the first retaining part and comprising a first gripping surface for frictionally gripping a surface of the elongated member when the ornament in the assembled configuration is strung on the elongated member, whereby the ornament, when the ornament in the assembled configuration is strung on the elongated member, can be releasably secured in a first location on the elongated member and be relocated by a sliding movement along the elongated member to be releasably secured at a second location, wherein the first friction part in an un-deformed state and the first retaining part in an un-deformed state have different material and/or mechanical properties in the unassembled configuration of the ornament, a difference in hardnesses preferably acting to prevent the first friction element from being detached from the shell during said sliding movement, wherein said first friction part in an un-deformed state and the first retaining part in an un-deformed state have different indentation hardness, characterized in that the shell (401, 501) has an outer surface and an inner surface and further comprises two side walls (461, 462) extending from the inner surface of the shell, the two side walls being configured to grip the first friction element and assist in securing the first friction element in said cavity, so that the first friction element is prevented from being detached from the shell during said sliding movement.