At $1 million, this GoldCaster Guitar is one of the world’s most expensive guitars. The GoldCaster’ is a custom made hollowbody guitar that features a solid 18 Karat Gold Top. 33 items on this guitar shine with bling including the nut, bridge, saddles, tone knob, volume knob, switch knobs, string tree, ferrules, neck plate, strap buttons, headstock logo and the headstock lettering. This instrument is probably better off being set on display than actually being played.