Sterling Silver and Cubic Zirconia collar bar/tie pin. Unscrew one end, remove the chain, thread the bar through and screw up the end again so all you can see is the pendant hanging from the chain, very effective, will look great in the show ring, also looks fab to accessorise a smart evening bag if you attach it to the handle. 

Presented in a special Gee Gee Images' red modern futura presentation box.