Cobalt blue faceted glass tumbler

This item is a short, faceted glass tumbler or cup, appearing to be made of transparent cobalt blue glass. The user identifies this as a 'cup', an attribution consistent with its form. The object features a wide circular rim that tapers down to a narrower, multi-faceted hexagonal or octagonal base. The construction appears to be molded or pressed glass, as evidenced by the sharp geometry of the lower half. The blue color is saturated and consistent throughout the material. There are visible water droplets or condensation on the interior and exterior surfaces, suggesting current use. No maker's marks, signatures, or branding are visible in the photograph; therefore, any specific brand attribution remains a hypothesis subject to in-person verification. The style is common for mid-to-late 20th-century or contemporary glassware. The rim appears smooth without visible chips, though the lighting and reflections on the dark tabletop make a full assessment of surface wear or fine scratches difficult. The item is stylistically consistent with utilitarian cafe-style glassware.

I have examined the image of the cobalt blue faceted glass tumbler. Based on what I can see, the item is a contemporary or mid-to-late 20th-century molded glass cup. The deep blue color and hexagonal-to-circular geometry are characteristic of mass-produced utilitarian glassware often found in cafe or residential settings. I cannot verify the specific manufacturer or age from a photo alone, as no hallmarks or maker's marks are visible; thus, any attribution to a premium brand remains a hypothesis. The value is based on the assumption that this is a quality, non-designer glass piece in good condition. Typically, items of this type are sold in sets; as a single unverified unit, the market demand is limited. The estimated value reflects typical pricing for high-quality vintage or modern reproduction molded glass. To determine a more precise valuation or to establish if it originates from a specific esteemed glassmaker like Duralex or Bormioli Rocco, an in-person inspection of the base for stamps and a check for mold seam quality would be necessary. If this item were discovered to be a designer-signed piece or part of a rare early 20th-century collection, the value could increase slightly, whereas common mass-market versions would value at the lower end of the range. Documentation of provenance or scientific testing of the glass composition would be required to elevate this from a utilitarian object to a collectible.