The Pulitzer Arts foundation in St. Louis by Tadao Ando.

Photo: View Pictures.

That pursuit continues with the new Serpenti, available in four dials representing the seasons—green aventurine for summer, tigereye for fall, white mother-of-pearl for winter, and pink mother-of-pearl for spring. (In each instance, small pieces have been assembled into dynamic compositions, with matching cabochon crowns.) The bezels are all lined in 38 diamonds, and the backs engraved with the architect’s signature. The case shape and bracelet, however, are pure Bulgari, with supple Tubogas chains in a range of metals.

“The idea of a new collaboration actually came from Ando,” notes Fabrizio Buonamassa Stigliani, the brand’s creative director of watches. “He wanted to explore a creation inspired by nature.” Together the partners have played to each other’s strengths. Says Ando: “With the Serpenti, a serpent eating its tail, symbolizing the circle of life, I was inspired to express the circle of nature.” bulgari.com