I think the gelatin with gold luster dust would amazing! Make a thin frame from extruded 100% gum paste and let it dry for a day, then use that to put the gelatin in. You can use wire if you don't have to have it edible.
Beginners, be sure to parrot advice and get your post count up as fast as you can. After all, it's not what you know, it's what people THINK you know.