Art Deco style paste and white metal ring

This is a vintage ring featuring an elongated rectangular face that houses two large, step-cut colorless stones, likely glass or paste, set side-by-side in a vertical arrangement. The metal appears to be a white metal, possibly silver or a silver-plated alloy, showing visible dark patina and minor surface wear consistent with age. The shoulders and gallery of the ring are heavily detailed with delicate filigree work, milgrain edging, and small raised dot or bead motifs typical of the Art Deco period, roughly suggesting an early to mid-20th-century origin. The stones exhibit a pale, slightly warm hue under lighting, with visible internal facets characteristic of molded or cut glass rather than precious gemstones, though gemstone testing has not been performed and the materials remain unauthenticated. There are no visible maker's marks, hallmarks, or signatures apparent from this camera angle. The identification of the period rests entirely on stylistic cues such as the geometric elongation and filigree metalwork. The item displays moderate wear, including surface scuffs on the metal and slight edge chipping or abrasion on the table of the lower stone.

Based on what I can see in the photograph, this vintage ring features design elements characteristic of the Art Deco period, including an elongated rectangular face, delicate filigree metalwork, milgrain edging, and step-cut colorless paste stones. I can't verify from a photo whether the white metal is sterling silver, a silver-plated alloy, or another base metal, nor can I test the stones without physical access. The item displays moderate wear, such as surface scuffs on the metal and slight edge chipping on the lower stone. Would need physical inspection to confirm material composition, stone type, and the presence of any hidden hallmarks. Assuming the stylistic indicators correctly point to an early-to-mid-20th-century origin, comparable vintage costume and paste jewelry items of this type typically trade in the $150 to $300 range among collectors of period fashion accessories, driven by steady demand for wearable Art Deco aesthetics. However, if this piece turns out to be a modern reproduction, replica, or made 'in the style of' rather than a period artifact, the value would likely drop significantly to the $30 to $60 range. To confirm authenticity, age, and material composition, a physical examination by a qualified gemologist or antique jewelry specialist, alongside potential hallmark verification and scientific testing, would be necessary.