Rolex GMT-Master II 40mm Diamond & Black Sapphire Bezel Diamond Lugs Yellow Gold 116758SANR BLACK OYSTER

Rolex is a brand with a celebrated heritage in professional tool watches, and the GMT-Master II is an iconic model originally developed for international pilots. This particular reference, 116758SANR, is a significant execution of that legendary design, incorporating high-end materials and gem-setting that reflect the brand’s capabilities beyond its tool watch origins. The 40mm case and integrated lugs are crafted from solid 18k yellow gold. The bezel is a notable feature, constructed from black sapphire and set with diamonds for the numerals, while the lugs are also fully paved with brilliant-cut diamonds. The black dial provides a stark, legible contrast to the precious metals and gems. It is fitted with the brand’s renowned Oyster bracelet, also in 18k yellow gold, known for its robust three-piece link construction and Oysterlock safety clasp.

This watch is powered by the Rolex Caliber 3186, a self-winding mechanical movement that is a COSC-certified chronometer. The key complication is the GMT function, which allows for the simultaneous display of two time zones. This is achieved through the independent adjustment of the traditional hour hand and the distinctive 24-hour hand, which works in conjunction with the 24-hour graduated bezel. The movement also features a Parachrom hairspring, manufactured by Rolex from a paramagnetic alloy, offering greater resistance to shocks and temperature variations. The functionality remains that of a professional instrument, despite the luxurious material execution.

The watch is presented in mint condition, indicating it shows no visible signs of wear. It is accompanied by its official Rolex warranty card, confirming its authenticity and providing the date of its original sale. As a reference that combines the GMT-Master II’s iconic tool watch design with a full diamond and sapphire bezel configuration in yellow gold, this model holds a specific position in the market. It appeals to collectors seeking a high-impact, precious metal Rolex sports model. Its collectibility is supported by the enduring demand for the GMT-Master II line and the specialized nature of this gem-set variant, making it a notable piece within the brand’s modern offerings.