This is organic sculpted form, which is common in 1960s-1970s hand-blown studio glass. Heavy weight, suggesting solid glass construction. Striking mid-century style cased art glass vase in a sculptural "melted bottle" form.
Hand-blown with layers of rich color: a deep emerald green neck flows into swirling yellow-green marbling over a dark blue base, all resting on a solid clear glass foot. It is a folded vase with solid color cores and white inner layer. The color core in the base has a ground matte finish for stability. The piece has a substantial weight and dramatic shape, making it an eye-catching statement for any retro, modern, or eclectic space. This piece would be stunning displayed in retro modern decor, eclectic, or to add to up-scale glass collection!
Condition excellent only one area has interesting white lines but this maybe inside glass when created. Steps to create according to AI. Initial Gather - The glassmaker gathers a small amount of molten blue glass on the blowpipe.Forming the "Pad" - Before adding outer layers, they flatten the hot blue gather slightly - that creates the flat, square-ish base area you're seeing. Layering Colors - The blue gather is then dipped or rolled into additional colors (white inner layer, green/yellow swirls, black), and the rest of the vase is built up. Shaping & Folding - As the piece is inflated and sculpted, the outer colors get their swirl/marble effect, but the very bottom retains that un-swirled core of blue.