Modernist Brass Signet Ring with Crystal Accent

This item is a contemporary or mid-century style signet ring, characterized by its bold, geometric, and angular aesthetic. The ring is constructed from a yellow-toned base metal, likely brass or a gold-tone alloy, exhibiting a matte or brushed finish rather than a high-polish sheen. It features a rectangular, flat-top face with a singular, off-center inset brilliant-cut stone, which appears to be a clear glass crystal or cubic zirconia. To the left of the stone, there is a series of horizontal etched or engraved linear grooves, providing a subtle textural contrast. The shank is relatively wide and has a square profile that transitions into the flat head, typical of Brutalist or Modernist influence. In terms of condition, the piece shows significant signs of wear and oxidation; the metal surface displays a dull patina with dark spots and some greenish traces (verdigris), suggesting the degradation of a top plating or natural aging of a base metal. There are visible surface scratches and minor pitting across the flat face and band. No maker's marks or hallmarks are visible in the current orientation, suggesting it may be a mass-produced fashion or costume jewelry piece from the late 20th century.