October 19, 2023
~ when discussing vaseline glass in the United States, collectors are referencing a type of old glass that is yellow or yellow-green in normal light and glows bright green under a blacklight
~ the nickname “vaseline” comes from the resemblance of some pieces to the hue of Vaseline petroleum jelly, which is light yellow in color
~ as little as 0.1 to 0.2 percent of uranium dioxide is added to the formula of glass to give it the yellow-green tint, according to Vaseline Glass Collectors Inc
~ this small amount of uranium dioxide not only gives it its yellow color, but makes it glow under a black light
~ manganese causes an orange or peachy glow
~ vaseline glass was produced from the mid-1800s through the beginning of World War II,
~ its peak of popularity was from the 1880s through the 1920s
~ According to Vaseline Glass, Inc., “The government confiscated all supplies of uranium during WWII and halted all production of Vaseline Glass from approximately 1943 until the ban was lifted in Nov. 1958.”
~ after 1959, uranium or vaseline glass started being made again, although it is expensive, so the glassware is rare
~ source: the spruce crafts
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