The Masterlink’s case has a straight top and a curved bottom. That is the inheritance from the Maestro, the shape Gérald Charles Genta drew for the maison that carries his name, with the “smile” cut into the lower edge at six o’clock. According to the maison, every stone is cut for its place.
The Gem-Set is that bezel done in white gold with sixty baguettes. There are three versions, in blue sapphire, red sapphire or green tsavorite. Ten pieces of each. Case and bracelet are steel.

Shorter stones at the corners
Looked at from the side, the white-gold bezel with its baguettes stands above the polished steel case. The steel beneath it carries the asymmetric outline.
The stones run straight along the top edge at twelve, turn the cut corners and then follow the curve of the smile at the bottom. At the cut corners, the shorter baguettes make the custom cutting visible.

In our three frames, the green bezel creates the strongest contrast with the silver dial, followed by the red and then the blue. The lighting is not identical across the three photographs.
Dial, bracelet and movement
The construction beneath each coloured bezel is consistent across all three versions.
- Dial: a silver, double-layered construction, with a vertical sunburst base, applied stripes and skeletonised baton hands.
- Indexes: thirteen stones in the same colour as the bezel.
- Bracelet: steel, with brushed centre links and polished outer links.
- Clasp: a concealed butterfly clasp, released by push-buttons in the last links.

Through the open caseback, vertical Côtes de Genève on the GCA1000’s bridges continue the dial’s stripes. Gerald Charles describes fitting a screw-down crown into a case this thin as a particular problem.

From the Sarawak to the Masterlink
Gerald Charles places the Masterlink in the line of the Sarawak, a single piece Genta designed in 2007 for the royal family of Sarawak. Its pavé case and bracelet combined diamonds with baguette rubies. The maison describes the Gem-Set as the first gem-set Masterlink, carrying forward the asymmetric integrated bracelet and the gem-setting.
Price and availability
Production. Each reference is described on its own official page and in the maison's release of 4 September 2025 as a limited edition of 10 pieces.
Price. Available upon request, according to the Gerald Charles technical sheet. (as of Aug 2026)
Specification · shared by every version
Case
- Shape
- square-based asymmetric Maestro case, "smile" at 6 o'clock
- Size
- 38.00 × 38.00 mm
- Height
- 7.99 mm
- Material
- 316L stainless steel, polished and satin-brushed; white gold bezel
- Crystal
- sapphire
- Caseback
- see-through
- Crown
- screw-down, Clous de Paris motif, pyramid shape
- Water Resistance
- 10 ATM / 100 m
- Components
- 31
Movement
- Calibre
- GCA1000
- Type
- self-winding manufacture movement with offset micro-rotor, developed between Geneva and Fleurier
- Functions
- hours, minutes
- Power Reserve
- 50 hours
- Frequency
- 3 Hz
- Components
- 176
- Jewels
- 29
- Dimensions
- 30.59 mm diameter, 2.67 mm total thickness
- Notable
- Incabloc shock protection, hacking seconds, unidirectional micro-rotor; vertical Côtes de Genève on the bridges continue the dial stripes; micro-rotor sandblasted at the base with sunburst brushing on top
Details
- Straps
- integrated asymmetric steel bracelet developed in-house, hidden link construction, concealed butterfly clasp with hexagonal 'GC' plate and hidden push-buttons; micro-link for fine adjustment
Price
- Price
- Available upon request, according to the Gerald Charles technical sheet. (as of Aug 2026)
Versions
Sources
- Gerald Charles, Masterlink Gem-Set, blue sapphires, ref. ML1.0-SSPS-WG31-18GS-SBCL (official page, read 27 August 2026)
- Gerald Charles, Masterlink Gem-Set, red sapphires, ref. ML1.0-SSPS-WG32-18GS-SBCL (official page, read 27 August 2026)
- Gerald Charles, Masterlink Gem-Set, green tsavorites, ref. ML1.0-SSPS-WG43-18GS-SBCL (official page, read 27 August 2026)
- Gerald Charles, official English technical sheet for the Masterlink Gem-Set, three references, each with 'Retail price: Upon request'
- Gerald Charles, press release: The last asymmetric vision reimagined - Mr. Genta's spirit lives on in the Masterlink Gem-Set (Geneva, 4 September 2025)


