I’ve Never Seen a Dive Watch With This Stunning Feature

Yema goes over the top with this mother-of-pearl dial.

Close-up of a blue dial wristwatch with a black textured strap resting on blue fabric.Yema

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Mother-of-pearl dials popped up all over the watch world in the summer of 2025, but one French brand waited until the autumn to say, “Hold my champagne.”

Yema bested the entire field by expanding the naturally iridescent material from the dial onto the bezel. To my knowledge, this is the first time it has ever been done, and the result is stunning.

Stainless steel Yema Navygraf wristwatch with blue-green mother-of-pearl bezel and dial on a beige cushion.
The Navygraf Pearl features a bezel insert that matches the mother-of-pearl dial.
Yema

Yema’s Navygraf was already a respectable retro diver, but this unprecedented application of the watch industry’s favorite mollusk-derived material gives it a luxury-tier elegance.

The dial and bezel insert are topped with thick slices of mother-of-pearl, creating a strong interaction with light. I caught a sneak peek of the uniform combination at Windup Watch Fair NYC, and even the brand’s professional marketing images hardly do it justice.

Stainless steel Yema Navygraf wristwatch with blue-green mother-of-pearl dial and bezel on a wrist.
The lighter dial color, pictured above, is a limited edition of 200 pieces.
Yema

The Navygraf Pearl is available in two remarkably similar colors. The lighter option, referred to by the brand as Blue, is a limited edition of 200 pieces, while the darker version is a regular production model.

The limited-edition reference shows more turquoise and seafoam green, while the darker regular production model skews more toward navy blue and deep purple.

Pearl diving

Mother-of-pearl showed up all over the industry this year, from mosaic dress watch dials to integrated sports watches. But divers were the most common genre, likely due to the aquatic connection.

Silver metal wristwatch with a blue iridescent dial and bezel, held in a hand.
After seeing the Navygraf in person, I can attest that pictures cannot do the dial and bezel justice.
Photo by Brad Lanphear for Gear Patrol

Yema stands out from the crowd by expanding the alluring material, which is harvested from the inner layer of mollusk shells, specifically mussels and clams, onto the bezel.

This design is impressive because it is challenging enough to cut the hard but brittle material into a dial-shaped circle, but far more so to create a bezel-shaped ring. The overall appearance is dictated by the thickness of the mother-of-pearl and the color of the underlying base, which must also align between the bezel and dial.

Silver Yema Navygraf wristwatch with iridescent blue dial and black textured strap worn on a wrist.
Yema did an excellent job at creating a uniform appearance between the bezel and dial, which is not easy.
Yema

As Gear Patrol’s watches editor, Johnny Brayson, was quick to point out, making a bezel insert with mother-of-pearl is risky because it is a fragile material. Yema addresses this factor by positioning the Navygraf Pearl as “a sophisticated statement when worn with formal attire.”

This unabashed “desk diver” has a 39mm steel case with a brushed top and sides accented by polished chamfered edges, ideally suited for daily wear. The unidirectional bezel has a coin-edge grip, and a discrete crown guard secures the sizable screw-down crown.

Small rotor, big power

The second most impressive feature of the Navygraf Pearl is hidden beneath the mother-of-pearl dial. It is powered by Yema’s Micro-Rotor Caliber Manufacture Morteau 20, referred to as the CMM.20 for short.

A micro-rotor automatic movement like this is rarely seen outside of the luxury tier, and it boasts an accuracy of -3 /+7 seconds per day, a 4Hz beat rate and a 70-hour power reserve.

Brushed stainless steel wristwatch with linked bracelet and a crown engraved with a stylized "Y" on a tan suede surface.
The Navygraf Pearl has a sleek 9.75mm tall case thanks to the caliber CMM.20 movement.
Yema

Utilizing a micro-rotor slices a layer off a typical automatic movement, allowing for a slimmer case. The Navygraf Pearl case measures a mere 9.75mm tall (not including the crystal), enhancing its daily wearability.

Another interesting detail is that the standard obelisk hour and minute hands used in the Navygraf collection are replaced with Yema’s Superman diver hands, including the big arrow-tipped minute hand. The hour markers, bezel pip and all three hands feature blue-glowing Super-LumiNova.

Close-up of the back of a Yema Navgraf steel watch showing the automatic movement through a transparent case back.
Yema’s caliber CMM.20 automatic micro-rotor movement is visible through the sapphire crystal exhibition caseback.
Yema

Yema’s over-the-top — literally — use of mother-of-pearl is doubly unique. Not only is it likely the first instance of the precious material used for a uniform dive watch bezel and dial, but every individual watch has a distinct texture.

Mother-of-pearl is formed by stacking layers of a microscopic hexagonal material called aragonite. Because the geometric, semi-transparent panels are arranged randomly, much like the ice crystals in a snowflake, the resulting appearance is always unique.

Availability and price

Both dial options of Yema’s Navygraf Pearl are available on two different straps. The lighter-colored, limited-edition dial is slightly more expensive than the regular production dial.

Yema Navyraf wristwatch with blue-green iridescent dial and bezel, black textured strap, on brown fabric.
Both Navygraf Pearl dials are available on a perforated FKM rubber pin-buckle strap.
Yema

The Blue dial is available for $2,549 on a brushed steel H-link bracelet with quick-release pins and a push-button micro-adjustable clasp, and for $2,229 on a black perforated FKM rubber pin-buckle strap. It is limited to 200 pieces worldwide.

The darker standard dial is priced at $2,490 on the steel bracelet and $2,190 on the rubber strap.

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