Vintage Blue Controlled Bubble Art Glass Paperweight 3" Unmarked 1960s-80s

This striking vintage art glass paperweight features a spectacular blue controlled bubble design that creates a mesmerizing three-dimensional effect. The hand-blown piece showcases hundreds of precisely placed air bubbles arranged in concentric circles radiating from a central blue sphere, demonstrating the skilled craftsmanship of mid-century glassmaking. The brilliant cobalt blue core is surrounded by layers of clear crystal glass encasing the intricate bubble work, creating stunning optical depth and light refraction. Era: Circa 1960s-1980s Dimensions: 3 inches diameter x 3.5 inches height The paperweight is unmarked, which was common for many quality European and British glassmakers during this period. The sophisticated controlled bubble technique, sometimes called "Bullicante" in Italian glassmaking, was particularly popular among Murano artisans and British makers like Thomas Webb, Whitefriars, and Caithness during the 1960s-1980s. This technique involved rolling molten glass over a spiked surface to create precise air pockets, then encasing them in layers of clear crystal while maintaining perfect clarity and bubble placement.