AI Appraisal Estimate

A classic vintage three-stone ring, likely from the mid-20th century, featuring a central round-cut blue sapphire flanked by two round-cut diamonds. The sapphire displays a deep, saturated cornflower to navy blue hue, set within a white metal mounting that appears to be either 14k/18k white gold or platinum. Each stone is secured by multiple thick prongs integrated into a decorative, openwork gallery. The side diamonds show significant brilliance, suggesting a quality cut such as an Old European or Modern Brilliant. The metalwork features scrolling open designs on the gallery beneath the stones, characteristic of early-to-mid 20th-century craftsmanship. Regarding condition, the metal shows a soft patina and fine surface scratches consistent with light wear. The prongs appear intact, though a professional cleaning and tightening would be recommended for long-term security. No obvious chips or fractures are visible on the gemstone facets in the current view. This style of ring, often referred to as a 'trilogy' ring, represents past, present, and future, making it a popular choice for anniversaries or engagements during the Art Deco and Retro periods.

I have conducted a visual examination of this vintage three-stone 'trilogy' ring. Based on the craftsmanship, the openwork scrolling gallery suggests a production period between 1940 and 1960. The central sapphire exhibits the highly desirable 'cornflower' saturation often associated with Ceylon or Thai origins. The flanking diamonds appear to be well-matched Modern Brilliant cuts, estimated at approximately 0.25 to 0.30 carats each, totaling roughly 0.50 - 0.60 ctw. The metalwork, consistent with premium pieces of this era, is likely 14k/18k white gold or platinum, showing a characteristic soft patina. Market demand for mid-century trilogy rings remains robust, particularly for anniversary and engagement markets. Comparable sales of similar carat weight and sapphire saturation fall within the $2,500 to $4,000 range at retail. The value is buoyed by the ring's design integrity and the current trend favoring vintage sustainable jewelry. However, there are significant limitations to this image-based appraisal. I cannot definitively verify the metal's hallmark or the sapphire's nature (natural vs. synthetic) without physical testing. A professional in-person examination is required to check for thermal conductivity, inclusion patterns, and potential heat treatment. Furthermore, a specific diamond grading for color and clarity would require a loupe and master stones. For a formal insurance valuation, I would require a gemological laboratory report (such as GIA or AGL) to confirm origin and treatment status of the sapphire, as unheated natural stones can command a 30-50% premium over treated counterparts.