A necklet is a type of decoration which is designed to be worn and displayed around a person's neck, rather than hung (draped) from the chest as is the standard practice for displaying most decorations.
The Apollo 13 crew, with President Nixon, wearing their Presidential Medals of Freedom on ribbons
Grand Cross of the Legion of Honour worn on a ribbon.
Commander's cross of the Legion of Honour worn on a ribbon.
A livery collar or chain of office is a collar or heavy chain, usually of gold, worn as insignia of office or a mark of fealty or other association in Europe from the Middle Ages onwards.
Sir Thomas More wearing the Collar of Esses, with the Tudor rose badge of Henry VIII, by Hans Holbein the Younger (1527)
Drawing of detail of mermaid collar of Thomas de Berkeley, 5th Baron Berkeley (d. 1417), from his monumental brass at Wotton-under-Edge, Gloucestershire
Susan Fennell, mayor of Brampton, Ontario, Canada from 2000 to 2014, pictured wearing a modern mayoral collar
Collar of the Order of the Golden Fleece, shown in the Schatzkammer in Vienna, Austria