While Depression-era glass was and continues to be wildly popular as a collectors item, there are other types of glass that remain a hot commodity, be it for their color, shape, rarity, or material; Uranium glass (or Vaseline glass, as it’s also called, known for its petroleum jelly yellow color) is just as highly sought after, and perhaps even more intriguing than Depression glass because of its chemical makeup.

As you may have guessed, Uranium glass contains uranium oxide, which gives the glass a yellow or yellow-green tint, makes it radioactive, and causes it to glow vibrantly under a UV black light…if that’s not cool on some level, we don’t know what is!

Below are some photos of this intriguing glass, both under a black light, and not. You can find pieces like these inside Hidden Treasures, when we open May 29th!