The Trinity ring consists of three interlocking bands (yellow gold, rose gold, and a third band that in the original 1924 version was platinum, later replaced with white gold) designed to roll freely around one another while remaining held together by their interlocking form. It is perhaps the firm's most enduring and widely recognised design, and it has been in continuous production since its creation.
The technical achievement is in the construction: three separate bands must be linked in such a way that each can rotate freely within the assembly, yet none can be removed without disassembling the whole. The method uses a series of interlocking links or loops in the metal itself (the rings pass through one another at intervals) which constrains each band to move in a circular path while preventing separation. In a well-made Trinity ring, the movement of the bands is smooth and even, and the assembly holds its form without play or rattle.
The choice of three gold alloys was deliberate. Yellow gold, white gold, and rose gold are all gold alloys with different additional metals to achieve their colour: yellow gold uses copper and zinc, white gold uses palladium or nickel and sometimes rhodium plating, rose gold uses copper in higher proportion. The three tones together create a visual richness that a single-colour design could not achieve, and the combination has become so associated with Cartier that the tri-colour gold palette is now immediately legible as a reference to this design.
Among the ring's more noted wearers was Diana, Princess of Wales, who favoured both the Trinity ring and the Cartier Tank watch. Her public association with both pieces during the 1980s and 1990s contributed to their visibility in that period and to their subsequent place in the firm's twentieth-century iconography.
The two blog posts on the Trinity ring, The Cartier Trinity Ring: Its Origins and The Cartier Triple or 'Trinity' Ring, explore the design's history and context in detail, including how hallmarks and signatures on the inside of the bands are used to place individual pieces within the production history.
Sources
- Francesca Cartier Brickell, The Cartiers (Ballantine Books, 2019), ch. 5 (“Stones Paris: Early 1920s”) and ch. 6 (“Moicartier New York: Mid-1920s”)
- Hans Nadelhoffer, Cartier: Jewelers Extraordinary (Thames and Hudson, 1984; revised 2007), pp. 176, 184 et al.
