#0009 Signed Fluorescent Pink glass paperweight with Bubbles.

3” No chips or cracks. Signed Sirius. The addition of certain elements to glass can cause it to fluoresce, emitting light when exposed to ultraviolet (UV) radiation. Uranium oxide, for instance, was a popular additive in glassmaking during the mid-20th century, particularly in American and European glasshouses. This resulted in glass that glows a vibrant green under UV light, often referred to as 'Uranium glass' or 'Vaseline glass' due to its characteristic yellowish-green hue in normal light. The presence of uranium in glass is generally considered safe, with radioactivity levels typically very low. This fluorescent property adds a unique dimension to the glass object, appealing to collectors interested in its scientific and historical aspects. While the 'bullicante' technique points towards Italian craftsmanship, the fluorescence suggests a potential divergence or a specific period of production where such additives were common across different glassmaking regions. The combination of the 'bullicante' effect and fluorescence makes this piece particularly intriguing.

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• Listed Mar 12, 2026