How can I hang ceramic art on drywall?
You are much better off using an anchor that is probably way over engineered for your artwork.  For instance I would get a 150 lb anchor (or even better) like this.  If you go straight into the stud you can really need a thicker screw for a lot of weight or it could sag.  Problem I would foresee is the hole in artwork for screw not being big or deep enough for said screw.