As we expect from a high-end watch show, watches at Watches & Wonders Geneva tend to focus on complicated mechanics, precious metals, and diamonds.
But this year, one watch caught our attention for a very different reason – the hard stone dial.
This watch used pietersite.
Arnold & Son’s new HM Pietersite takes a material more commonly associated with cabochons, beads, and small healing stone objects, and turns it into the centerpiece of an ultra-thin luxury watch dial. Now that’s cool.
We’ve seen other hardstones used in watches before, of course — lapis lazuli, malachite, tiger’s-eye, meteorite, mother-of-pearl, onyx, even opal. But pietersite? We cannot remember seeing it used this way before.
And it works beautifully – in both meanings of the word.
The swirling blues, golds, browns, and white tones naturally look like storm clouds moving over water — exactly why pietersite is sometimes nicknamed the “storm stone.” Every dial is different, which means every watch is unique.
At first glance, the watch itself is intentionally restrained: two hands, no date, no extra display, and a slim 39.5 mm case. That simplicity is important because it leaves the visual focus exactly where it belongs — on the stone.
Arnold & Son ties the watch thematically to Britain’s maritime history and to John Arnold, the famed 18th-century English watchmaker whose marine chronometers helped improve navigation at sea. Even the name “HM” references both “Hours and Minutes” and the naval tradition of His or Her Majesty’s ships.
The watch is being produced in two limited editions: eight pieces in 18-karat red gold and 18 pieces in stainless steel.
But for us, the real takeaway is obvious: Pietersite may have quietly become one of the best-looking watch dial materials we’ve seen in a long time.
Tap here to see what else can be seen at the Watch & Wonders Show
