The item pictured is uranium glass, also known as Vaseline glass, due to its yellow-green color. It contains uranium oxide, which makes it fluoresce under UV light. Key details include: It glows green under UV light due to the uranium content. Typically contains a small amount of uranium, usually around 2% or less. It was popular in the 19th century and up to World War II. Uranium use in glass declined when it was prioritized for nuclear applications. While radioactive, it is generally considered safe for handling in normal use. It is now a collectible item, found in antique shops and auctions. The color can vary from yellow-green to other shades, including blue, pink, and clear. It can be found in various forms such as dishware, vases, and decorative objects