You may remember Andrew Lindsey's quadruped robot, made using parts from Big Blue Saw, which we mentioned a while back. One of its most distinctive features was its glowing "eye", made from fluorescent uranium glass lit by ultraviolet LEDs.
Mr. Lindsey is now offering the robot eye as a standalone pendant. It would make a wonderful pendant or a great addition to a steampunk sculpture.
Here's a video of the pendant in action: