AI Appraisal Estimate

This is a vintage oval-shaped brooch featuring a large, polished tiger's eye cabochon as its centerpiece. The gemstone displays characteristic chatoyancy with vertical bands of golden-yellow, brown, and honey hues. The stone is held in place by four prominent silver-toned metal prongs. The bezel is surrounded by an intricate decorative frame consisting of a beaded or 'milgrain' border, further accented by clusters of spheres or granules on the horizontal axes, suggesting a Victorian revival or Mid-century costume jewelry style. The metal appears to be a copper or brass base with a silver-toned plating that shows significant oxidation and verdigris, particularly around the granulated details. The condition is consistent with age, showing a heavy patina and some surface grime, which obscures any potential maker's marks. The construction is robust but indicative of mass-produced costume jewelry rather than fine jewelry, likely dating from the mid-20th century (circa 1950s-1970s). The piece measures approximately 1.5 to 2 inches in length based on scale.

Based on my visual examination of this vintage oval tiger's eye brooch, I have assessed its value within the current secondary market for mid-century costume jewelry. The centerpiece is a genuine tiger’s eye cabochon exhibiting excellent chatoyancy. However, the setting is a silver-toned base metal—likely a copper alloy given the visible verdigris (green oxidation). The construction, particularly the heavy prongs and molded decorative granules, indicates a mass-produced Victorian Revival piece, likely dating from the 1960s. The condition is fair to good; while the stone is intact, the significant oxidation and patina on the metal detract from its aesthetic appeal, though some collectors value this aged look. Market demand for unsigned, non-precious tiger's eye costume jewelry remains stable but modest. Comparables for similar mid-century brooches regularly sell in the $40–$75 range at antique malls and online auctions. The lack of a visible maker's mark (such as Sarah Coventry or WRE) limits its ceiling. Please note that this appraisal is based on photographic evidence. A physical inspection is required to definitively confirm the metal composition via acid testing and to check the pin mechanism for repairs. Verification of its provenance or a maker’s mark hidden under the heavy patina would be necessary to adjust this valuation upward.