Took it upon myself to make them out of a scrap model of an orb lying around. If you don't know the Infinity Gems, they appeared in Marvel Super Heroes as a power up system! The gems are as follows in the picture.
The rights of the gems go to Marvel. The models shown of Iron Man, Captain America, Thanos, Hulk, Wolverine, Psylocke, Spiderman, Magneto, Doctor Doom, Juggernaut, Shuma-Gorath, and Blackheart are not included.