Singer Justin Bieber spotted wearing a Piaget

Justin Bieber was recently spotted wearing a remarkable vintage timepiece that underscores his appreciation for haute horlogerie. The singer was photographed at a private social gathering wearing a rare Piaget 9131D in 18K white gold, a watch that exemplifies the Maison's mid-1980s commitment to blending high jewelry design with precision watchmaking.

The Piaget 9131D is a dress watch built around the brand's signature ultra-thin Calibre 9P manual-wind movement, one of the thinnest mechanical calibres of its era. The case measures approximately 24mm in width, crafted entirely in 18K white gold with a rectangular proportions characteristic of Piaget's Protocole collection. The dial of this example showcases a natural opal centerpiece—a highly unconventional and luxurious material choice—displaying vivid iridescent reflections in greens, blues, and purples. This opal is bordered by deep black onyx and encircled by brilliant-cut diamonds, creating a striking high-jewelry aesthetic. Water resistance is rated at 30 metres, typical of dress watches of the period.

The Piaget 9131D represents a pivotal moment in the Maison's history, when the company positioned itself not merely as a movement manufacturer but as a purveyor of wearable jewelry. The use of natural opal on a watch dial is exceptionally rare, as the stone's fragility and sensitivity to moisture present technical challenges. This particularity—combined with the hand-selected gemstones and precious metal construction—makes each 9131D a unique object. Fewer than 500 examples are believed to have been produced across all variants during the late 1980s.

Bieber's choice reflects a growing trend among younger collectors toward vintage haute horlogerie and unconventional dial materials. Unlike mass-produced contemporary sports watches, the 9131D demands knowledge and connoisseurship to appreciate. The pairing signals his shift toward heritage watchmaking and bespoke luxury pieces rather than contemporary luxury watches.

Current grey-market valuations for well-preserved Piaget 9131D examples with natural opal dials range between $22,000 and $28,000 USD, reflecting strong collector demand. Original retail pricing for the model in the late 1980s was approximately $8,000–$12,000 USD. The watch remains highly collectible, with examples increasingly difficult to locate due to limited production and the inherent fragility of opal dials, which can deteriorate or crack over time.