Pierres Holding SA was a watch group within ASUAG focused on functional jewels ("Pierres"). Pierres Holding was active from the 1960s through 1983 and was based in Bienne and for a time was headed by Pierre Renggli.
Pierres Holding SA was formed in the 1960s to bring together watch jewel technology suppliers within ASUAG. It was structured as a general holding company with four key "centers" based on geography:
- Centre La Chaux-de-Fonds
- Centre Les Brenets
- Centre Pieterlen
- Centre Thoune