Like a stained-glass window, the Tsar Bomba Nucleus Femme 02 gathers dozens of tiny fragments of colour into a mosaic at the centre of its dial. A row of sparkling stones frames the composition, and natural mother-of-pearl surrounds it with a soft iridescence that shifts as the light moves. The transparent case lets that glow pass right through, finished with rose-gold screws and crown. In Blue, a translucent sky-toned shell and matching strap pick up the cooler pieces of the pattern.

Inside, a Swiss Ronda 763 quartz movement keeps the time, and luminous coating on the hands stays readable after dark. The 35mm tonneau weighs only around 45 grams, sits under a sapphire crystal and is water resistant to 30 meters (3 ATM). Its fluororubber band changes without tools, so you can switch the look in seconds. A miniature work of art for your wrist, vivid from every angle.