A unique jewelry repeater in exquisite blue hues.

The retailer's collaboration with eminent watch brands is not just a modern phenomenon. Iconic models from the past with two signatures on their dials are particularly valuable at watch auctions. And the second name on many of these pieces is Bucherer.

In 2016, the chain launched the Bucherer BLUE editions, which has seen manufacturers (including Piaget, IWC, Jaeger-LeCoultre, Panerai etc.) launch special editions of their watches in Bucherer's trademark shade of blue, although they no longer bore the retailer's name on their dials.

Now the Biver brand has been added to the list, which has launched a unique piece with blue sapphires for the chain called the Carillon Tourbillon. Stones weighing a total of approx. 30 carats surround a blue dial made of sodalite.

This blue mineral was also presented in Biver's debut collection when it appeared last spring. The masterful work rendered by the jewelers is what makes this novelty housed in a 43-mm white-gold case special.

They selected a palette of blue stones to decorate the inner flange, bezel, lugs, case flank, lever for the minute repeater, and even the caseback, which is really rarely seen in the world of watches. The caseback reveals a view of the automatic movement, developed for Biver by the specialists at Le Cercle des Horlogers.

The micro-rotor, which generates a 72-hour power reserve, is made of platinum, while its decorative plate with inscribed specs is crafted in rose gold.

The upper bridges made of white gold have been given a grained surface, while you can see details inside have a "perlage" finish (a pattern of small pearl-like circles).

You can also see the structure of the musical carillon-type mechanism in the movement through the caseback — three hammers and three gongs, instead of the more typical two for minute repeaters.