Art Deco Style Sapphire and Diamond Filigree Ring

This is a vintage-inspired cocktail or dinner ring showcasing an architectural Art Deco aesthetic. The piece features a central square-cut or lozenge-set dark blue sapphire, approximately 3-4mm in size, housed within an elevated milgrain-bordered setting. Radiating from this center stone are fanned, openwork filigree panels that create an oval-shaped gallery face. These panels are pavé-set with numerous small, single-cut colorless diamonds, likely totaling between 0.25 to 0.50 carats. The metal appears to be a white alloy, consistent with white gold or platinum, and exhibits intricate 'pierced' metalwork common in the 1920s and 30s. The construction includes a tapered shank with additional geometric detailing at the shoulders. Measuring approximately 15mm in vertical face height, the ring shows a high degree of craftsmanship with delicate beading along every metal edge. The condition appears fair to good; there is some noticeable dulling to the metal surface and possible minor grime buildup in the delicate openwork, suggesting a need for professional ultrasonic cleaning. No significant missing stones are immediately visible in the image, though the uniformity of the milgrain edges indicates moderate wear consistent with an item that has been worn for many decades or is a mid-20th-century revival piece.