no it isn’t, it’s hanging around the neck of a cat (or was it a dog?)- I saw the documentary “Men in Black” that proves it
It did hang around a cats neck plus the universe is inside an alien marble.
http://ak-hdl.buzzfed.com/static/enhanced/webdr06/2013/4/10/4/enhanced-buzz-21157-1365582040-9.jpg
https://s-media-cache-ak0.pinimg.com/736x/ab/f1/bb/abf1bbace2eeeb08cdbec2b9c98639f4.jpg