Blue glass decorative bowl

This is a circular decorative glass bowl featuring a deep cobalt blue coloration with subtle iridescent or metallic purple sheens reflecting across the interior surface. The physical characteristics include a rounded, shallow basin design with a smooth rim and a flattened base. A notable decorative feature is the ring of evenly spaced, incised or carved oblong slash marks radiating around the well of the bowl, which catch the light and create visual texture against the smooth glass. The bowl displays small trapped air bubbles throughout the body, which is a common characteristic of artisan or hand-blown glass manufacturing techniques. The surface shows minor signs of light handling and use, though no major cracks, chips, or repairs are immediately visible from this overhead angle. There are no clearly legible maker's marks, signatures, or stamps visible in the provided image. The style and construction are consistent with mid-to-late 20th century studio art glass or decorative glassware, showcasing moderate craftsmanship quality. The identification in this description is based entirely on visual inspection; the owner-supplied attribution describing the object as a 'glass bowl, 5 inches circular' is noted as unverified context.

Based on what I can see in the provided image, this circular decorative glass bowl features a deep cobalt blue coloration with iridescent purple sheens and characteristic trapped air bubbles indicative of artisan studio glass production. Per user submission, the object is identified as a 'glass bowl, 5 inches circular,' which serves as our working hypothesis for this valuation. I cannot verify from a photo whether the piece possesses any maker's marks or specific studio attribution, as none are visible and physical inspection is needed to confirm. My value estimate of $75-150 assumes that the item is a quality mid-to-late 20th century studio art glass piece consistent with this aesthetic. General market demand for decorative artisan glassware of this type tends to be modest, with buyers driven primarily by visual appeal rather than investment-grade recognition. If physical inspection reveals the piece to be a mass-produced replica, a modern reproduction, or a generic 'style of' piece lacking attribution, the value would likely drop to the $25-50 range. To establish a stronger valuation, an in-person examination by a glass specialist, provenance documentation, and a search for elusive signatures or pontil marks would be necessary.