Cartier Paris Ruby and Diamond Cartier Nautial Club Flag Brooch

A pennant of elegance caught in motion.

This rare Cartier brooch transforms the language of nautical flags into a jewel of remarkable refinement and wit. Designed as a windswept banner openworked with the initials “CNC”—likely referring to the Club Nautique Cartier—the piece evokes the discreet glamour of Riviera summers, private yachts, and the cosmopolitan world long associated with the maison. Cartier’s fascination with symbolism and aristocratic leisure is distilled here into a composition that feels both graphic and deeply sophisticated.

Crafted in 18K yellow gold and platinum, the brooch is set with fourteen calibré-cut rubies and thirty-nine brilliant-cut diamonds, arranged with the precision and balance that define Cartier’s finest work. Accents of red enamel animate the surface, while the flowing silhouette gives the impression of fabric lifted gently by sea air. Compact yet full of personality, it is a jewel that speaks quietly, but unmistakably.

For the collector drawn to the rare intersection of wit, craftsmanship, and history.