Art Deco style 'Moi et Toi' cocktail ring

This piece appears to be a dual-stone ring, often referred to as a 'Moi et Toi' (Me and You) style, featuring two central stones set horizontally within an oval-shaped head. The central stones are colorless and faceted in a manner consistent with older cutting styles, such as Old European or transitional cuts, and are flanked by small baguette-shaped stones and a pave-set halo. The metal is white in color, stylistically consistent with platinum or 18k white gold common in the mid-20th century. The setting showcases intricate milgrain detailing and geometric openwork on the gallery, which are hallmark characteristics of the Art Deco period or Art Deco revival styles. The shoulders of the ring are further embellished with small accent stones. No maker's marks, hallmarks, or metal stamps are visible in the image, meaning the material composition and specific origin remain unverified hypotheses subject to in-person testing. There is visible wear consistent with age, including softening of the milgrain edges and small accumulation of debris beneath the stone settings. The overall craftsmanship suggests a high level of detail common in early to mid-20th-century jewelry design.

Based on the image provided, I have examined this Art Deco style 'Moi et Toi' cocktail ring. The piece features two central stones with cutting styles consistent with Old European or transitional cuts, housed in a white metal setting that displays characteristic geometric openwork and milgrain detailing. While the craftsmanship suggests high-quality mid-20th-century production, I can't verify the metal purity or the nature of the gemstones from a photo. The absence of visible hallmarks means that the current attribution to platinum or 18k gold remains a working hypothesis subject to physical testing. My valuation of $4,500 - $7,000 assumes the central stones are diamonds of representative quality for the period and the metal is platinum. This estimate reflects the current market demand for 'Moi et Toi' designs and the labor-intensive nature of the pave and baguette settings. However, I must note that the value is highly dependent on authentication. Based on what I can see, if the stones were found to be synthetic or the metal a silver-based alloy, the value would decrease significantly, potentially to the $200 - $500 range as a 'style-of' decorative piece. To provide a more precise figure, I would need an in-person examination to perform a thermal conductivity test on the stones, a density or acid test on the metal, and a microscopic inspection of the wear patterns and tool marks. General market behavior shows that while Art Deco aesthetics remain popular, premiums are only realized through physical verification of materials. Any softening of the milgrain edges suggests age, but only scientific testing can confirm if this is an era-appropriate piece or a later revival.