L’Artisan captures a storm in stone with the Pietersite

L’Artisan’s Pietersite turns an unusually animated mineral into the focus of a limited Belgian-made watch. The natural stone is sourced from Henan Province in China, then sized, surfaced and polished by hand at the maker’s bench in Belgium. Its blue, grey and gold fibres create the shifting, storm-like effect that gives pietersite its “Tempest Stone” nickname. Applied Breguet numerals and a separate minute track bring order to the unique pattern of each dial.

The 38mm steel case houses the HZ5000A automatic micro-rotor calibre, which runs at 4Hz and provides a 42-hour power reserve. A domed sapphire crystal, sapphire display back and grey suede strap complete the watch. The edition is limited to 50 pieces with no restock announced. L’Artisan lists it at €995 including tax and says orders are scheduled to ship by the end of October 2026.