Art Deco 18k White Gold Filigree Diamond and Sapphire Cocktail Ring

This is an exquisite Art Deco-style cocktail ring crafted in 18k white gold, weighing approximately 4.8 grams and sized at 6.5. The centerpiece is a prominent circular brilliant-cut diamond of approximately 0.84 carats, secured within a hexagonal bezel setting. Flanking the central stone are two vibrant blue round-cut sapphires, also held in hexagonal frames, creating a classic three-stone geometric motif. The ring face features an expansive horizontal marquise-shaped silhouette characterized by intricate, openwork lace filigree and fine milgrain detailing typical of the 1920s-1930s era. The craftsmanship is high-quality, showcasing symmetrical floral and scrollwork motifs that run along the gallery and shoulders. The mounting shows slight evidence of wear consistent with age, particularly subtle smoothing of the milgrain edges and minor surface scratches on the metal. The central diamond exhibits a strong table and visible facets suggesting an older cut, potentially an Old European Cut, which aligns with the vintage aesthetic. While specific maker's marks are not visible in the photo, the structural integrity appears sound with secure prongs holding the primary stones.

Based on my visual examination and the data provided, this ring presents as a quintessential example of Art Deco-style craftsmanship, likely dating to the 1920s or 1930s. The 18k white gold mounting (4.8g) features the intricate die-struck openwork filigree and milgrain edging that define the era. The central 0.84ct diamond, described as having an older cut, is a significant value driver; if confirmed as an Old European Cut with good color and clarity (G-H, VS-SI range), it commands a premium in the current vintage market. The flanking sapphires add desirable geometric contrast. Condition-wise, the ring appears structurally sound, though the noted smoothing of the milgrain is consistent with authentic age. The market for authentic Art Deco 'dinner rings' remains robust, with high demand for pieces featuring substantial center stones over 0.75ct. Reproductions exist, but the specific wear patterns described suggest a period piece. However, this appraisal is provisional based on photography. Critical value factors remain unverified: I cannot confirm the exact color/clarity grading of the diamond or whether the sapphires are natural or synthetic ( Verneuil synthetics were common in the 1920s). A physical inspection is required to verify the '18k' stamp, test the metal purity, and examine the stone settings under magnification to rule out modern casting techniques indicative of a reproduction. If the center stone proves to be of exceptional quality, the value could exceed this estimate.