Rolex Gmt Master II 116759SA Black Dial Diamonds Bezel 40mm

The Rolex GMT-Master II 116759SA is built around contrast rather than colour variety. Its 40mm case and Oyster bracelet are made from 18k white gold, yet the metal can initially resemble steel from across a room. The difference becomes obvious on the wrist: the watch is denser and more polished, while the black dial keeps the centre controlled. Around it, blue sapphires and diamonds replace the conventional numbered bezel, and diamonds across the lugs move the design away from a standard travel watch without erasing its familiar GMT-Master II shape.

Blue Without the Red

The bezel defines reference 116759SA. Baguette-cut blue sapphires alternate with diamonds around the rotating ring, while additional diamonds sit across the tops of the lugs and crown guards. Unlike the SARU configuration, there are no red rubies. The palette is cooler and more unified, which suits the white-gold case and makes the watch feel less theatrical than the red-and-blue version, though it remains highly noticeable.

Lighting changes the bezel considerably. In direct sun, the sapphires show a deep electric blue and the diamonds create sharp flashes. Under warm indoor lighting, the blue can look navy or almost black, allowing the dial to dominate. Product photographs often brighten every stone equally; in person, the bezel has more variation and changes with wrist angle.

Black Holds the Focus

The black dial is the most wearable element of this configuration. It gives the luminous hour plots, Mercedes-style hour hand, minute hand and arrow-tipped GMT hand a clear background. The Cyclops lens enlarges the date at 3 o’clock, and this central layout remains easier to read than a fully pavé-dial version. Black-dial examples of the reference are documented alongside more elaborate pavé configurations.

The outer GMT indication is less immediate. A conventional GMT-Master II bezel provides engraved numerals for exact 24-hour reading. Here, gemstones indicate position rather than presenting a printed scale, so reading the second time zone requires more familiarity. The travel function remains intact, but the display prioritises decoration over instant precision.

Forty Millimetres, Real Weight

A 40mm diameter sounds moderate, but the Rolex GMT-Master II 116759SA does not feel small. Broad lugs, crown guards and the solid white-gold bracelet give it more physical presence than an Oystersteel GMT-Master II of the same generation. Auction records confirm the 40mm white-gold construction and matching Oyster bracelet used on black-dial examples.

Bracelet sizing matters. If worn loosely, the case can roll toward the outside of the wrist and the crown guard may press into the hand. A close, comfortable fit distributes the mass more evenly. Medium and larger wrists will usually carry it naturally; on a narrow wrist, the diamond-set lugs can make it appear wider than its stated diameter.

Travel Logic Remains

Inside is the automatic Rolex calibre 3186, a 31-jewel movement used in this GMT-Master II generation. The local hour hand can be moved forward or backward in one-hour jumps without disturbing the minute, seconds or 24-hour hand. The date follows local time, making adjustment practical when crossing time zones. Power reserve is approximately 48 hours.

This independence separates the 116759SA from a purely jewellery-led watch. The gem setting changes how the bezel is read, but the movement still provides a useful travel system. Water resistance is rated to 100 metres, although the exposed stones and value of the watch encourage more careful ownership than a routine steel sports model.

White Gold Records Wear

White gold gives a quieter first impression than yellow gold, but it is not low maintenance. The polished centre links, clasp and case sides collect fine marks through normal use. Dust and skin oils can also soften the brightness of the stones, so careful cleaning around the settings matters. Repeated polishing should be avoided because case geometry and original stone-set surfaces are important.

The watch can be worn regularly, but it suits deliberate use. Travel and formal settings fit its character; crowded environments, hard desk contact and repeated knocks deserve more thought. Buyers should also confirm that the bezel, lugs and bracelet remain factory-correct, since originality is especially important on a gem-set Rolex.

The SA Buyer

The Rolex GMT-Master II 116759SA suits someone who wants a gem-set GMT without the warmer colours of the SARU or the darker appearance of the SANR. The black dial gives the watch a functional centre, while the sapphire-and-diamond bezel creates its identity. It is more controlled than the ruby version, but far less discreet than a standard white-gold GMT.

It is not ideal for buyers who need instant 24-hour bezel readability, a lightweight daily watch or an exterior that hides scratches. It makes the most sense for a collector who understands the practical GMT architecture but prefers an unusual factory-set configuration. This reference does not improve the travel function; it preserves that function inside a cooler, more formal and highly specialised version of the GMT-Master II.