he Carat 128 collection is distinguished by its cushion-shaped case, which is faceted on the front, echoing the form of the diamond that inspired it and creating a distinctive geometric silhouette.

The collection encompasses two styles: Carat 128 Facet, distinguished by diamond-set cases and dials coupled with leather straps, and Carat 128 High Jewellery, a series of unique and very limited-production pieces, featuring a faceted dial crystal and fully gem-set bracelet.

During LVMH Watch Week 2025, Tiffany & Co. unveils the Carat 128 aquamarine high jewellery watch, a one-of-a-kind piece. The Carat 128 aquamarine high jewellery watch, a unique piece, features a 27 mm diamond-set case in 18k white gold, with a total of 897 diamonds totalling over 29 carats set on its case and five-row bracelet.

The glass protecting the dial is a single diamond-cut aquamarine of 34.52 carats. Artisans crafted its facets to mimic those of the Tiffany Diamond and create an impression of greater visual depth. The dial is snow-set with 382 diamonds in five sizes of 1.2 total carats and the case is snow-set with 255 diamonds of five different sizes totaling 0.7 carats. Artisans set the 18k white gold crown with nine round brilliant diamonds.

The design of the diamond bracelet draws inspiration from the iconic Tiffany^® Setting engagement ring and its distinctive six-prong design. Artisans set the five-row bracelet with 251 brilliant diamonds of 28 total carats in three different diameters. The 60 largest of these diamonds – weighing 20 total carats with each stone individually registered with its own serial number – are held by the six-pronged Tiffany^® Setting, a design that maximises the amount of light that can pass through the diamond, enhancing its scintillation. The diamond setting of the watch and bracelet represents more than 315 hours of meticulous work.

A scintillating interpretation of one of the world’s most famous diamonds, the Carat 128 watch collection epitomises Tiffany & Co.’s creative imagination and mastery in crafting exquisite jewellery timepieces.

TECHNICAL SPECIFICATIONS

• Material: 18k white gold case, hands, crown, dial, buckle and bracelet.
• Size: 27 mm case
• Function: Hours and minutes
• Total diamonds: 897 brilliant diamonds of more than 29 total carats
  § Case set with 255 round brilliant diamonds of 0.7 total carats
  § Dial: snow-set dial 382 brilliant diamonds of 1.2 total carats, protected by a single diamond-cut aquamarine of 34.5 carats
  § 18k white gold crown set with 9 round brilliant diamonds
  § Bracelet: 18k white gold bracelet set with 251 brilliant diamonds of 28 total carats
• Movement: High-precision Swiss quartz movement
• Warranty: Two-year international limited warranty
• Water resistance: 3 ATM
• Swiss-made
• Unique piece