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2825 Sand Hill Rd
Menlo Park, CA, 94025

(650) 292 0612

Stephen Silver is renowned for our extraordinary ability to procure, design and handcraft the world's finest jewelry and gemstones.

The Stephen Silver Fine Jewelry Estate Collection includes some of the finest pieces from the Edwardian, Victorian, Art Deco, Art Nouveau, and Retro eras. Signed and period pieces are the company's specialty; many of which are from prestigious jewelry houses such as Cartier, Van Cleef & Arpels, Bulgari, Tiffany & Co., and Harry Winston.

The Stephen Silver Fine Jewelry Signature Collection exemplifies modern day luxury combined with old world elegance to produce true works of art. Exquisitely handcrafted in platinum and 18-karat gold, using only the very finest diamonds and colored gemstones, our Signature Collection is exceptional in quality and extraordinary in style.

News From HYT

H2 Tradition: HYT's Retro Contemporary U-Turn

Matthew Maciag

"We have always said that we would never create a classic piece. Having said that, this is exactly what we've done!"

Vincent Perriard, HYT's CEO, loves nothing better than exploring the brand's vast capacity for expression. From its very beginnings, the brand has blazed new trails, experimenting, creating, inventing... Its driving force — innovation — has propelled all its models to greater heights than anyone could have imagined. And now, HYT has reached the very summit. From this tempting viewpoint, how could HYT not cast a contemplative eye over three centuries of watchmaking?

"Fluid innovation is, and will remain, in our DNA", continues Vincent Perriard, "but this doesn't prevent us from playing around with the codes of traditional watchmaking. Fun, experimentation, the joy of surprise: after all, that's what we do best!". 1

Contemporary classic or futuristic retro? As its name suggests, the H2 Tradition is a meeting of the two. It is the first HYT with classic guilloché finishes. It is the first HYT with delicate lacquered dials and blued hands. 

However, underneath this mantle of light, the H2 Tradition has both feet firmly in the 21st century. It retains its hydro-mechanical aesthetic, thanks to the capillary with the blue fluid moving forwards as the hours pass. 

It is driven by two bellows positioned either side of 6 o'clock, developed in 2013 on the very first H2. The traditional side is expressed by the diamond guilloché main plate, the ogival shaped crown and its blued hands: HYT wanted it to be classical and easy to read, with the most subtle of aesthetics.


Apparent Simplicity

This constant balance between tradition and modernity is more complex than it seems. HYT had to modify the design of the H2's calibre. The goal? To give it a more classic appearance, in line with the aesthetic canons of haute horlogerie. 

The balance, for example, has been recentred to provide room on the dial for the minutes. This simple shift meant a large part of the movement's design had to be overhauled, a feat once again achieved by HYT's long-standing partners, APRP. The case has also been re-designed, with the crown protector removed, in yet another nod towards the codes of watchmaking tradition. 

The finish of the H2 Tradition also required a number of adjustments. To allow for a diamond guilloché finish in rhodium-plated nickel silver on both sides, the main plate, for example, had to be made slightly thicker, which in turn meant new tolerances had to be calculated for the movement. All the bridges have been modified, reconstructed, polished, hand-bevelled. As with all HYT's creations, the H2 Tradition is best appreciated in terms of perspective and volume. 

"While the initial idea – to create a classic HYT – was simple enough, in practice, ways of preserving the identity of the piece, whilst imbuing it with codes which are not naturally its own, had to be constantly found. Its a fantastic challenge, suggested by our collector customers, and one that we have met with aplomb", concludes Vincent Perriard.

Specifications - H2 Tradition


Polished, microblasted and satin-finished white gold and titanium

  • Diameter: 48.8 mm 
  • Height: 17.9 mm
  • Screw-down titanium dynamometric crown 
  • Titanium case middle with light anthracite grey PVD coating 
  • Rider at 6 o'clock, Roman numeral, titanium filled with blue varnish
  • Domed sapphire crystal (box) with anti-reflection coating 
  • Screw-down sapphire case-back
  • Water-resistant to 50 metres

 Retrograde fluidic hours; minutes, seconds

  • Crown position indicator (H-N-R)

 Mechanical with manual winding, exclusive HYT calibre

  • 21,600 Vph, 3 Hz, 28 jewels
  • Microblasted and stainless steel polished bridges with polished and locked internal angles 
  • Diamond guilloché main plate in rhodium-plated nickel silver, rhodium-plated bellows
  • 192-hour (8-day) power reserve 


  • Lacquered varnished hour dial with 4N treatment, black Roman numerals 
  • Lacquered varnished minute dial (12 o'clock) and seconds dial (2:30) with 4N treatment; blued minute hand
  • Black indices (minutes, seconds) and Arabic numerals 


  • Patent blue alligator and titanium deployant buckle 

50-piece limited edition; Ref.: 248-TW-10-BF-AB;


HYT Reinforces its Link with Motorsports Through a Partnership with the Young FIA F3 Racer, Peter Li Zhi Cong.

Matthew Maciag

HYT is proud to announce its first Chinese athlete partnership: Peter Li Zhi Cong, the young racing driver who will compet at the FIA Formula 3 European Championship in 2016.

« Youth. Tenacity. Multiculturalism». Three key values that the Neuchâtel-based watch start-up wishes to promote through this latest partnership, affirms Vincent Perriard, CEO of HYT. Peter Li Zhi Cong is one of the youngest driver from China in the motorsports industry.

Vincent Perriard explained that he is talented and ambitious. Peter Li said : « I am pleased to be apart of the of the HYT family as I really like their unique and groundbreaking watches. I am proud be the first Chinese sportsman of this great company and looking forward to starting this great adventure together. 2016 will be an important year for me in the FIA Formula 3 Championship and will be doing my best to achieve strong results. »

Just like HYT, Peter Li Zhi has a passion for mechanics and, above all, for technical excellence.

HYT is delighted to support Peter Li on his latest FIA Formula 3 races during the 2016 season.


01-03 April Paul Ricard (WTCC) FRA

22-24 April Hungaroring (WTCC) HUN

13-15 May Pau (F3 GP) FRA

20-22 May Red Bull Ring - Spielberg (DTM) AUT 24-26 June Norisring (DTM) DEU

15-17 July Zandvoort (DTM) NLD

28-30 July Spa-Francorchamps (Blancpain GT Series) BEL 09-11 September Nürburgring (DTM) DEU

30 September – 02 October Imola (ETCC) ITA

14-16 October Hockenheim (DTM) DEU

SKULL MAORI Let time look you straight in the eyes!

Matthew Maciag

“Simply taking an existing movement, giving it a vague skull shape and presenting it as an entirely new piece is not really our style.”

Vincent Perriard, HYT CEO, gets straight to the point – The Skull, HYT’s new extraordinary and unprecedented creation, breaks all the rules. You don’t need to be an expert to appreciate the power of its design. Even at first glance the Skull makes a striking impression, simply because it epitomises and at the same time breaks away from everything that HYT represents. It is provocative, unique and has a bold design supported by the fluid mechanics that have become the brand’s signature style. The Skull speaks for itself. Its development, however, was anything but obvious.

When asked what the driving force behind the creation of the Skull Maori was, HYT Art Director Xavier Casals discussed the desire to further emphasise the skull shape of the piece by using a rare and traditional hand engraving, a beautiful Metier d’Art. Casals added that the use of the Maori tribal tattoo, often associated with a skull, was another integral part to the concept.

Intelligent watch-making

The use of a capillary, which carries a fluid to act as the hour marker, is a concept that is already mastered by HYT and its partners. However, any significant changes in form require extensive background work. For the Skull, the skull shape of the tube, which measures less than one millimetre in diameter, was a significant challenge in itself. The issue centred on the capillary’s four angles, two of which are almost 90° at the base. These curves meant that bending the glass was a particularly delicate task.

"Their vertical structure, developed for the H1 watch, served as our starting point. However, we then had to re-examine how to generate enough power to move through these sharp angles, whilst ensuring that the fluid always indicates the correct time, moving at the right speed and with perfect regularity over twelve hours”.

Recapturing the essence of time

In line with the raw, primitive imagery of the skull, HYT also decided to do away with the minutes. This bold choice has two consequences. Firstly, it shifts the main focus to the capillary, the only sensory indicator of time as it passes, and secondly it centres all the attention on the piece’s architectural design, with its assertive, confident skull, which occupies almost the entire surface of the dial. Similarly, in stark contrast to its other pieces, HYT chose to almost completely hide the movement on the dial side. 

To breathe life into the skull, HYT instead introduced a number of new developments. Firstly, the two vertical bellows function continuously – it is their subtle expansion and contraction which causes the fluid to move.

In addition, the eyes of the Skull have a life of their own. The right eye indicates the power reserve of the watch. Using a series of subtly different translucent coloured inserts, the eye gradually darkens as the piece nears the end of its 65 hours of power. The left eye hides a barely visible seconds dial which rotates continuously. You only have to look the Skull in the eyes to observe its spirit and the life, in the most literal sense, flowing at its heart. In both cases, a subtle honeycomb pattern provides the background and adds depth to the eyes. The skull itself is not inert - its movement operates constantly. It is alive, in the truest sense of the word: it has a soul. This is the first watch creation in which, instead of observing the time, time watches you.

Family likeness 

“We always want to see how far we can go in terms of design and engineering. Our objective was to create a Skull that completely breaks away from everything you normally see, while still embodying the very DNA of HYT – a bold, conceptual, technical, and original design”, Vincent Perriard explains.

The changes don’t stop at the movement, however. A new 51 mm case has been specially created for the Skull, with the addition of new, crisp angled lugs. The single assembly push-button of the crown, which adjusts the time, is located between 2 o'clock and 3 o'clock. The crown protector has been removed. Lateral inserts have also been added to the case, allowing multiple future combinations. 

The Skull Maori is offered now in a very limited version, a fifteen-piece limited edition. 




Case: black DLC titanium and 5N gold with brushed, micro-blasted and satin finishes

  • Diameter: 51 mm
  • Height: 17.9 mm
  • rubber coated screw-down crown
  • black DLC titanium dome at 6 o'clock
  • cambered sapphire crystal with anti-reflective coating on the dial side
  • Screwed sapphire back
  • water resistant to 50 metres

Functions: retrograde red fluid hours; seconds

Movement: Mechanical with manual winding, exclusive HYT calibre

  • 28,800 vib/h, 4 Hz, 35 jewels
  • bridges hand-chamfered and adorned with Côtes de Genève, rhodium plated bellows
  • 65-hour power reserve

Dial: unstructured, fluid hours

  • black hour dial, grey anthracite index and 5N numerals
  • rare handmade engraved pink gold (5N) skull shape 
  • seconds dial (left eye)
  • power reserve indicator (right eye)

Strap: brown leather with laser engraved black pattern, black DLC titanium pin buckle

Ref.: 513-CB-43-RF-MV, Limited edition of 15 pieces

H2 Aviator: A Lofty Creation for HYT

Matthew Maciag

With an already imposing name, the H2 Aviator is the first time HYT creates a timepiece destined for aviation lovers which each step of its concept designed to satisfy aeronautical codes. The H2 Aviator isn’t simply an evolution, it is a true transformation of HYT’s iconic H2 launched in 2013, a piece easily distinguishable by its ‘V’ shaped positioned bellows.  

‘The H2 Aviator is a well thought out design conceived to go the distance over years, to evolve, follow and even anticipate horological trends and to think that our creations are all of this quality, gives me enormous satisfaction.’ says HYT CEO Vincent Perriard. ‘The H2 transcends different orbs and is now propelled 10,000 feet upward as if it had always been meant for this.’

Optimal legibility

The H2’s new aviatic garb underlines the piece’s legibility, a defining element for all flight instruments. The path and the colour of the minute hand has been redrawn with its quarter hour indexes enlarged and in red.

The central hand underwent the same treatment! Magnified and tipped by a red arrow, a first for HYT. The crown position indicator (H-N-R) located at 3pm is visible via a window that displays the selected function.

To ensure all components shine with maximum visibility they are placed on a DLC treated movement with a satin finish and polished angles. The contrast with the neighbouring chrome is optimal, the reading of the time simple and intuitive.

Furtive fuselage

Like all fighter planes the cockpit is functional and extremely visible in this sleek casing. HYT gave priority to a case entirely coated in DLC including the hour indexes that are treated with grey anthracite Super-LumiNova. Consistent with aeronautical codes, the hour is read by a yellow liquid.

As with all technical pieces, the H2 has its share of innovations. One of HYT’s leitmotifs is to bring these innovations directly to the wearer: palpably, concretely and immediately. HYT’s latest innovation is a new strap covered in in Kevlar (an aramid synthetic fibre with high tensile strength and temperate resistance, a fibre that can be used in extreme conditions such as clothing for racing car pilots, racing sails, and also in the aeronautical and aerospace industry).

The H2 Aviator’s case measures 48.8 millimetres. It is a limited edition of 40 pieces and will be available in October 2015. 



Technical Data


Case: Titanium black DLC with polished, micro blasted and satin finishes

- Diameter: 48.8 mm 

- Height: 17.9 mm

- Screw-down dynamometric crown sheathed in rubber

- Protected crown in titanium black DLC

- Titanium black DLC dome at 6 o'clock

- Domed sapphire crystal (box) with anti-reflection coating 

- Screwed sapphire back

- Water-resistant to 50 meters


Functions: Retrograde yellow fluidic hours; Minutes with a « déphaseur angulaire » (jumping hand) at 30 minutes; Crown position indicator (H-N-R); Thermal indicator


Movement: Mechanical with manual winding, exclusive HYT caliber

- 21,600 vph, 3 Hz, 28 jewels

- Titanium black DLC bridges and titanium black DLC colored satin-finished accents

- 192-hour (8-day) power reserve.


Dial: unstructured, fluid hours

- Black alumiunium hour dial; charcoal grey numerals

- Saphir minute dial, black rhodium minute hand with a red arrow, white indexes and every 15 minutes red numerals 15, 30, 45, 60)

- Luminescent minute hand and hour-markers.


Strap: grey/black Kevlar strap with a red stiching, titanium black DLC deployant buckle.


Ref.: 248-DL-01-GF-KG, Limited edition of 40 pieces

HYT Bathes its H4 in Light

Matthew Maciag

Innovation within tradition, the DNA of haute horlogerie, the movement heritage, and so on: forget it all. HYT does things its own way, and discards these received ideas. Need a known quantity to hang on to? Good news: the H4 Alinghi tells the time. As for the rest, you will need to forget anything that has been seen, designed, or even imagined before now. 

Nothing has changed, except the essential

The chassis is a familiar beast. Since the start of the year, the H4 has had more ink in publicity than it has in its capillary. It is based on the same movement architecture as the H1, HYT's inaugural piece, which has been completely skeletonised. 

With a 65-hour power reserve, it unveiled its sculptural mechanism for the very first time and opened up a new creative universe for HYT. One so appealing that the brand decided not to meddle with it: the new H4 Alinghi is virtually a carbon copy of its big brother. Or is it?

All is not as it seems

Using this as its basis, HYT has returned to its favourite game: creating, surprising, sometimes unsettling, always astounding. This time the brand has applied a radiant idea, as brilliant as it is difficult to spot at first glance. 

Only eagle-eyed enthusiasts will have noticed an intriguing detail: the presence of two push-pieces. What could they be for, on a model with hours, minutes and seconds? The answer is a first for HYT – probably in watchmaking as a whole. 

A fully illuminated project

The H4 Alinghi is a piece equipped with a light source. Under the rider at 6 o'clock, HYT has concealed two LEDs. Once activated, they flood the entire dial with white light. At night, the red fluid is energised by this light source, becoming perfectly visible. At the same time, the wash of light flows into every nook and cranny of the calibre, literally bringing this skeleton architecture to life, and defying the laws of watchmaking. 

The source of energy is purely mechanical. “Starting with a blank sheet is what we know. That's how all our models have been created", explains Vincent Perriard, CEO of HYT Watches. "But here, with the light complication, a new challenge was set: we had to start using our own existing calibre as a complete, functional basis. We basically had to add a piece to a puzzle which was already finished". 

Lumens ex machina

The generator has been nestled between 4 and 5 o'clock. It is invisible, and activated by the push-piece located opposite on the case middle. The process is broadly that of a dynamo: converting mechanical power into light energy. It is the rotation of the push-piece at 4:30 that winds the generator. Pressure on this same push-piece then activates the two LEDs which bathe the Alinghi in a soft white light. 

This illumination is possible for a maximum of five seconds, after which the mechanism must be reinitialised. No battery is needed for this process, which is fully mechanical. Three factors made it so tricky to develop: the extreme miniaturisation, the curved shape, and the fact, once again, that no development of this type had ever been achieved before. 

The H4 Alinghi, in honour of the eponymous team, will be released using the same base, with a carbon case, red liquid, white light, the team's logo on the seconds disc and a strap made from sail canvas, with just 25 pieces available. 

"The coherence of the idea seduced us ", explains Vincent Perriard. "Before HYT, we were told that having a movement running with a liquid was simply impossible. Before the H4 Alinghi, lighting up a dial was only possible with a battery. And, what is more, a liquid must never be used in conjunction with an electrical current. But, evidently, we’ve done all of those things. In reality, the only limits are those we set ourselves". 


Technical Specifications - H4 ALINGHI

Case : 3DTP™ carbon

  • diameter: 51 mm
  • height: 17.9 mm
  • rubber-clad screw-down black DLC titanium crown at 2:30 and a red crown at 4:30 
  • black DLC titanium and red numeral lacquered dome at 6 o'clock 
  • convex sapphire crystal with anti-reflective coating on the dial side 
  • screw-down sapphire case-back
  • water resistant to 50 metres. 

Functions : retrograde fluidic hours; minutes, seconds

Movement : skeleton mechanical hand-wound movement, HYT exclusive calibre 

  • 28,800 vib/h, 4 Hz, 35 jewels
  • bridges hand-bevelled and micro blasted, rhodium-plated bellows 
  • 65-hour power reserve. 

White light mechanical module : 

  • rewinding and push-button system with a crown at 4:30 
  • the dynamo works when the crown is compressed at 4:30. As soon as the button loosens the light stops working until the full decompression of the additional barrel spring. 

Dial : unstructured, fluid hour display

  • sapphire minute, seconds and power reserve dial
  • black minute indexes and luminescent numerals
  • black hour dial with white numerals
  • luminescent black minute hand
  • regulator at 12 o'clock
  • small seconds wheel with the Alinghi logo at 9:30
  • power reserve indicator at 2:30 

Strap : black rubber base with integrated silver canvas and red stiching. Black DLC titanium folding buckle 

Ref : 515-CB-03-RF-RV; 25-piece limited edition