Long before colorful dials became a contemporary watchmaking trend, Piaget was experimenting with natural ornamental stones. During the 1960s and 1970s, the maison embraced materials such as lapis lazuli, malachite, tiger's eye and turquoise, transforming traditional wristwatches into miniature works of art.
Lapis lazuli has been prized for thousands of years. Its intense blue color was associated with royalty in ancient civilizations, while the stone's natural golden pyrite inclusions can resemble stars scattered across a night sky.
The Protocole brings this ancient material into a distinctly modern architectural design. Its rectangular case and integrated bracelet frame the stone dial, allowing its natural color and individual markings to take center stage.
No two natural lapis lazuli dials are exactly alike. Each has its own distribution of blue tones, calcite and golden pyrite, giving every surviving example an individual character.
| Reference |
50154 M601D |
| Collection |
Protocole |
| Era |
Circa 1980 |
| Case |
18K white gold |
| Dimensions |
Approximately 27.5 × 25 mm |
| Dial |
Natural lapis lazuli |
| Movement |
Swiss quartz |
| Functions |
Hours and minutes |
| Caseback |
Solid, secured by four screws |
| Bracelet |
Integrated 18K white gold |
| Clasp |
Double-folding |
