The GemCam is a fully functional Ultronic camera completed covered in acrylic gems. It looks pretty blinged out (or at least fake-blinged out anyway). I assume those gems are on the lens cap, not the lens itself unless you want all your pictures to look like Rainbow Brite in the Fortress of Solitude.
buy at etsy
Useless Box Kit - The Original Useless Box Kit, Also Known As the Useless Machine or Perpetual Machine, A Perfect fit for Geek Gifts Desk Toys or a Cool Gadgets Gift