Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Rolex GMT-Master II Diamond-Set Bezel 18K Everose Gold Reference 126755SARU is a direct Swiss foundry specimen engineered in 18K Rose Gold Au750 (40.0 mm x 11.9 mm) with a certified Mettler-Toledo mass of 225.3g, Fischer XRF Au750 metallurgical verification, and Rolex Manufacture Cal. 3285 - 70h Power Reserve running at 28,800 vph (+0.4 s/d, 300 deg) with a 72-hour power reserve and 100m / 330 ft - Triplock Screw-Down rating.
Catalogued in our direct Swiss foundry Rolex assay archive under Specimen Code LAB-XRF-126755SARU-W40, this Rolex GMT-Master II Diamond-Set Bezel 18K Everose Gold Reference 126755SARU is smelted and CNC-machined in 18K Rose Gold Au750 (40.0 mm x 11.9 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 225.3g and scanned via non-destructive Fischer XRF spectroscopy.
What Distinguishes the Off-Catalog Haute Joaillerie Rolex Ref. 126755SARU?
The Rolex GMT-Master II Reference 126755SARU is an off-catalog haute joaillerie collector edition crafted in 18K Rose Gold Au750 (40.0 mm x 11.9 mm) with a hand-set baguette-cut gemstone bezel and a verified mass of 225.3g, because each baguette sapphire, emerald, ruby, or VVS diamond is optically graded for zero-gap channel alignment.
5 Core Foundry & Laboratory Assay Specifications:
- Foundry Specimen Entity: Rolex GMT-Master II Diamond-Set Bezel 18K Everose Gold — Official Ref. 126755SARU (Specimen LAB-XRF-126755SARU-W40).
- XRF Metallurgical Assay: 18K Rose Gold Au750 certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 225.3g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Rolex Manufacture Cal. 3285 - 70h Power Reserve beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.4 s/d, 300 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Diamond-Set Bezel with Solid 18K Gold Applied Hour Markers & Hands, and 100m / 330 ft - Triplock Screw-Down barometric sealing.
Within the Rolex GMT-Master II horological sub-silo, collectors also compare the Rolex GMT-Master II Guinness / Zombie Grey & Black Cerachrom 18K Everose Gold Ref. 126715CHNR (225.4g) and the Rolex GMT-Master Vintage Ref. 6542 (114.1g).
- Parent Brand & GMT-Master II Silo Hub: Browse All 289 Certified Rolex Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Fischer XRF Au750 Spectrometry Watch Authentication SOP-750 (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K FACTORY Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What laboratory instruments certify Reference 126755SARU (Rolex)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (225.3g), a Fischer XRF spectrometer (18K Rose Gold Au750), and a Witschi Chronoscope (+0.4 s/d, 300 deg).
Does the 225.3g reading match the authentic original Rolex 126755SARU weight?
Yes. Our CNC foundry machines the 18K Everose Gold case and bracelet to replicate the exact 225.3g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference 126755SARU?
Reference 126755SARU is powered by the Rolex Manufacture Cal. 3285 - 70h Power Reserve operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.4 s/d, 300 deg.
How are the baguette gemstones set on Rolex Off-Catalog Ref. 126755SARU?
Master gem-setters cut and channel-set each baguette gemstone directly into the 18K Rose Gold Au750 bezel and case architecture of Reference 126755SARU, preserving its 225.3g authentic reference weight and Rolex Manufacture Cal. 3285 - 70h Power Reserve chronometry.
Rolex GMT-Master II Diamond-Set Bezel 18K Everose Gold Ref. 126755SARU — XRF Certified Edition
Fischer XRF Verified 18K Rose Gold Au750 • Mettler-Toledo 225.3g • Rolex Manufacture Cal. 3285 - 70h Power Reserve
| Assay Specimen ID & Official Reference | Rolex — Oyster Perpetual GMT-Master II | Ref. 126755SARU | SKU: LAB-XRF-126755SARU-W40 |
|---|---|
| Fischer XRF Elemental Purity & Alloy | 18K Rose Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| Mettler-Toledo Gravimetric Mass (g) | 225.3g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Off-Catalog 18K Rose Gold Au750 Haute Joaillerie Bezel Hand-Set with Graduated Baguette-Cut Precious Gemstones and VVS Diamonds • 225.3g 18K Everose Gold • 40.0 mm x 11.9 mm |
| Calibre Reference & Witschi Chronometry | Rolex Manufacture Cal. 3285 - 70h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 300 deg |
| Isochronism Frequency & Autonomous Power Reserve | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| Double AR Sapphire Crystal & Barometric Rating | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Triplock Screw-Down |
| Dial Metallurgy & Clasp Hallmark Verification | 40.0 mm x 11.9 mm • Diamond-Set Bezel with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K Everose Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |