Gravimetric Mass & Chronometric Assay Bulletin
The Rolex Cosmograph Daytona Rainbow 36 Graduated Sapphires & Pave Dial 18K Yellow Gold Reference 126598RBOW is a hallmarked 18K Yellow Gold Au750 haute horlogerie timepiece measuring 40.0 mm x 11.9 mm with a verified Mettler-Toledo mass of 216.5g, powered by Rolex Manufacture Cal. 4131 - 72h Power Reserve operating at 28,800 vph (+0.5 s/d, 301 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 100m / 330 ft - Triplock Screw-Down water resistance.
| I. Official Maison Entity & Reference | Rolex — Oyster Perpetual Cosmograph Daytona | Ref. 126598RBOW | SKU: PV-AU750-126598RBOW-W4 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | 18K Yellow Gold Au750 — Au750 — 75.0% Pure 18K Gold Bullion (XRF Verified) • Hallmarked Solid Precious Metal |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 216.5g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Off-Catalog 18K Yellow Gold Au750 Bezel Set with 36 Graduated Rainbow Baguette-Cut Sapphires and 56 Brilliant-Cut VVS Diamonds on Lugs and Crown Guards • 216.5g 18K Yellow Gold • 40.0 mm x 11.9 mm |
| V. Mechanical Manufacture Calibre | Rolex Manufacture Cal. 4131 - 72h Power Reserve — Swiss Super Clone Mechanical Calibre Regulated to +0.5 s/d, 301 deg |
| VI. Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| VII. Double AR Sapphire Crystal & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 100m / 330 ft - Triplock Screw-Down |
| VIII. Dial Finishing, Bracelet & Hallmarked Clasp | 40.0 mm x 11.9 mm • Full Diamond Pave & Black Lacquer Dial with Rainbow Sapphire Hour Markers & 18K Yellow Gold Hands • Integrated Solid 18K Yellow Gold Oyster Bracelet with Oysterlock Folding Safety Clasp |
Curated within our hallmarked solid 18K gold Rolex collection, the Rolex Cosmograph Daytona Rainbow 36 Graduated Sapphires & Pave Dial 18K Yellow Gold Reference 126598RBOW exemplifies haute horlogerie metallurgy in 18K Yellow Gold Au750. Milled to exact manufacture geometry (40.0 mm x 11.9 mm), the monobloc middle case, Off-Catalog 18K Yellow Gold Au750 Bezel Set with 36 Graduated Rainbow Baguette-Cut Sapphires and 56 Brilliant-Cut VVS Diamonds on Lugs and Crown Guards, and Integrated Solid 18K Yellow Gold Oyster Bracelet with Oysterlock Folding Safety Clasp achieve a verified analytical mass of 216.5g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
How Are the 36 Graduated Rainbow Baguette Sapphires Set on Rolex Ref. 126598RBOW?
The Rolex Cosmograph Daytona Reference 126598RBOW "Rainbow" is an off-catalog haute joaillerie chronograph crafted in 18K Yellow Gold Au750 and set with 36 graduated spectrum baguette-cut sapphires on the bezel plus 56 brilliant-cut diamonds on the lugs and crown guards, because chromatically matched sapphire crystals require micron-level channel setting to maintain 216.5g reference mass.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: Rolex Cosmograph Daytona Rainbow 36 Graduated Sapphires & Pave Dial 18K Yellow Gold — Official Reference 126598RBOW (SKU: PV-AU750-126598RBOW-W4).
- Precious Metal Assay: 18K Yellow Gold Au750 verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 216.5g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Rolex Manufacture Cal. 4131 - 72h Power Reserve beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.5 s/d, 301 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 100m / 330 ft - Triplock Screw-Down rating.
Within the Rolex Cosmograph Daytona horological sub-silo, collectors also compare the Rolex Cosmograph Daytona Black Obsidian Dial & Sapphire Bezel 18K White Gold 5-Axis CNC Case Ref. 126599TSA (216.2g) and the Rolex Cosmograph Daytona Gibeon Meteorite Dial 18K White Gold Free-Sprung Calibre Ref. 126519 (160.7g).
- Parent Brand & Cosmograph Daytona Silo Hub: Browse All 289 Certified Rolex Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Swiss St. Bernard Poincon & Au750 Gold Hallmarks Guide (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K SOLID GOLD 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 is the verified authentic gram weight of this Rolex Ref. 126598RBOW?
At 18K Solid Gold 18K Solid Gold Salon, this Rolex Cosmograph Daytona Rainbow 36 Graduated Sapphires & Pave Dial 18K Yellow Gold Ref. 126598RBOW weighs 216.5g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic 18K Yellow Gold reference.
How is the 18K Yellow Gold Au750 purity verified prior to dispatch?
Every timepiece undergoes non-destructive Fischer X-Ray Fluorescence (XRF) spectroscopy confirming elemental bullion composition alongside a personalized 4K scale and hallmark inspection video.
Which movement powers Reference 126598RBOW and what is its power reserve?
Reference 126598RBOW is equipped with the Rolex Manufacture Cal. 4131 - 72h Power Reserve operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop to +0.5 s/d, 301 deg.
How many baguette-cut sapphires and diamonds are set on Rolex Rainbow Ref. 126598RBOW?
Reference 126598RBOW features 36 chromatically graduated rainbow baguette-cut sapphires flush-set into the 18K Yellow Gold Au750 bezel alongside 56 brilliant-cut VVS diamonds across the case lugs and crown guards, maintaining a verified total mass of 216.5g.
Rolex Cosmograph Daytona Rainbow 36 Graduated Sapphires & Pave Dial 18K Yellow Gold Reference 126598RBOW — Hallmarked Edition
Hallmarked Au750 & Pt950 Salon Edition • 216.5g Verified Mass • Rolex Manufacture Cal. 4131 - 72h Power Reserve