French Tank Ring In 18k Yellow Gold With Calibrated Diamonds And Rubies From The 1950s

Discover a striking example of mid-20th-century French design with this robust 18K yellow gold (hallmarked “750”) ring, featuring a bold “tank” profile. At its center, four brilliant-cut diamonds are set in an elegant polished white gold frame, while each shoulder is highlighted by a row of four square-cut rubies channel-set in the gold band. The clean rectangular head and gradually flaring band embody the architectural minimalism of the era, combining modernist restraint with the stones’ vibrant brilliance. Cut to a FR 54 (≈ US 6¾) and fully resizable, this ring weighs 10.50 g, offering a strong presence without sacrificing comfort. Its lightly patinated surface shows gentle wear, with no cracks, dents, or dings. An exceptional piece with a timeless look, this ring combines period graphic form and refined craftsmanship, ideal for collectors of vintage fine jewelry.