Apples of Eden appear in the game Assassin’s Creed. The item, a piece of Eden, glows and can control human minds. Making a prop replica of the Apple would be an excellent touch for any costume from the video game. Instructables user sk8r540, also known as Nick & Dan’s Designs, has written a how-to going over the steps for modeling, 3D printing, painting the prop, and lighting it from the inside with a LED to make it glow. He used an interesting technique to achieve the gold color. He explains:
In order to keep this as transparent as possible, I decided not to use a spray paint coat.
I decided to apply the Rub ‘n Buff directly to the surfaces I wanted to be gold colored.
Wearing Disposable Latex Gloves, apply small amounts of Grecian Gold Rub ‘N Buff to the outside surfaces of the apple that are raised using the tip of your gloved finger or a Q-Tip.
Rub an even coat on each of the surface, try not to get any wax on the recessed areas, but if you get a little bit it’s ok cause you can remove it with some high grit sandpaper.
You may be able to get a simiar effect by using a thin wash of acrylic paint.
Get all the details at Instructables.