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.
The Presidential Medal of Freedom is the highest civilian award of the United States, alongside the Congressional Gold Medal. It is an award bestowed by decision of the president of the United States to recognize people who have made "an especially meritorious contribution to the security or national interests of the United States, world peace, cultural or other significant public or private endeavors". The award is not limited to U.S. citizens, and, while it is a civilian award, it can also be awarded to military personnel and worn on the uniform. It was established in 1963 by President John F. Kennedy, superseding the Medal of Freedom that was initially established by President Harry S. Truman in 1945 to honor civilian service.
Medal and accoutrements, including the service ribbon, miniature and lapel badge
The Presidential Medal of Freedom with Distinction, as worn with white tie
A. Philip Randolph receiving the Medal from President Lyndon Johnson at one of the first ceremonies, 1964
President Richard Nixon presenting the Presidential Medal of Freedom to Duke Ellington, 1969