Yellow Gold Ruby and Diamond Band with Arthritis Shank

This is a detailed ring featuring a yellow gold band with alternating sections of red gemstones, likely rubies, and small white clear stones, likely diamonds. The band is approximately 3-5mm wide at the top, tapering slightly toward the base. The rubies are channel-set in rectangular or square cuts, displaying a deep pinkish-red hue. Interspersed between the ruby sections are round-brilliant or single-cut diamonds pavé-set in white metal or bright-polished yellow gold to maximize brilliance. A highly notable feature of this piece is the hinged 'Finger Fit' or similar adjustable arthritis shank. This mechanical feature allows the ring to open and close over an enlarged knuckle, indicating a custom or high-end modification for comfort. The metal shows minor surface scratches consistent with light wear, and the hinged mechanism appears functional. The style is indicative of mid-to-late 20th-century fine jewelry, likely from the 1980s or 1990s. While no hallmarks are clearly visible in the image, the craftsmanship suggests 14k or 18k gold construction. The combination of channel and pavé settings reflects high-quality labor and a classic aesthetic.