Rolex GMT-Master II Yellow Gold — Tiger Iron Dial, Cerachrom Bezel | Ref. 126718GRNR

Reference 126718GRNR introduced Rolex collectors to Tiger Iron — a striking metamorphic stone composed of interlocking bands of red jasper, golden tiger's eye, and silvery hematite — as a dial material. Launched at Watches & Wonders 2025, this yellow gold GMT-Master II pairs that geological rarity with a grey-black two-tone Cerachrom bezel, a combination that feels simultaneously mineral and modern. Stone dials from Rolex are individually unique; no two Tiger Iron dials share precisely the same banding pattern, making every 126718GRNR a singular object.

Calibre 3285 — Rolex's dedicated GMT movement — provides the practical architecture. The 3285 features an independently adjustable 24-hour hand for tracking a second time zone, a bidirectional Perpetual rotor, 70-hour power reserve, and Chronergy escapement. The yellow gold Oyster bracelet is crafted in Rolex's 18k Everose-adjacent yellow gold alloy, fitted with the Oysterlock safety clasp and Easylink 5 mm comfort extension. Oystersteel is listed as the case material in the original spec, with the bracelet in yellow gold — a two-tone execution consistent with the GRNR suffix.

This like-new, box-and-papers example represents a 2025 release with effectively no secondary market history yet established. Stone-dial GMT-Master IIs have historically commanded significant premiums over metal-dial counterparts — the Meteorite-dial 116759SARU being the canonical precedent. For collectors seeking a GMT with both functional excellence and genuine material exclusivity, the 126718GRNR occupies a unique position in the current Rolex catalogue.