1950's Cartier Ruby and Diamond Three Stone Ring

A classic 1950s ring that speaks directly to the design language of Cartier at its most disciplined and assured. The three stone composition is reduced to pure proportion, with a clean linear layout that feels intentional, architectural, and unmistakably mid century. Set in platinum, the ring centers an unheated Burmese ruby weighing approximately 0.52 carats, flanked by two carré cut diamonds totaling approximately 0.56 carats. The sharp geometry of the diamonds and the saturated depth of the ruby reflect Cartier’s mastery of contrast, controlled light paired with concentrated color, a defining approach of the house during this era. Signed Cartier, stamped 900 platinum, and bearing a serial number, the ring measures approximately 6 × 14 mm across the face. Refined, precise, and quietly powerful, it is a clear expression of Cartier craftsmanship, where restraint and balance define true luxury. Approximate size 6.