Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Rainbow Sapphire Bezel 18K Rose Gold Reference 15412OR.YG.1224OR.01 is a direct Swiss foundry specimen engineered in 18K Rose Gold Au750 (41.0 mm x 9.9 mm) with a certified Mettler-Toledo mass of 224.4g, Fischer XRF Au750 metallurgical verification, and Audemars Piguet Cal. 3132 Dual-Balance Openworked running at 28,800 vph (+0.6 s/d, 298 deg) with a 72-hour power reserve and 50m / 5 ATM rating.
Catalogued in our direct Swiss foundry Audemars Piguet assay archive under Specimen Code LAB-XRF-15412OR.YG.1224OR.01-W632, this Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Rainbow Sapphire Bezel 18K Rose Gold Reference 15412OR.YG.1224OR.01 is smelted and CNC-machined in 18K Rose Gold Au750 (41.0 mm x 9.9 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 224.4g and scanned via non-destructive Fischer XRF spectroscopy.
How Are the 36 Graduated Rainbow Baguette Sapphires Set on Audemars Piguet Ref. 15412OR.YG.1224OR.01?
The Audemars Piguet Royal Oak Reference 15412OR.YG.1224OR.01 "Rainbow" is an off-catalog haute joaillerie chronograph crafted in 18K Rose 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 224.4g reference mass.
5 Core Foundry & Laboratory Assay Specifications:
- Foundry Specimen Entity: Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Rainbow Sapphire Bezel 18K Rose Gold — Official Ref. 15412OR.YG.1224OR.01 (Specimen LAB-XRF-15412OR.YG.1224OR.01-W632).
- XRF Metallurgical Assay: 18K Rose Gold Au750 certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 224.4g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Audemars Piguet Cal. 3132 Dual-Balance Openworked beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.6 s/d, 298 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Rainbow 36 Graduated Sapphires with Solid 18K Gold Applied Hour Markers & Hands, and 50m / 5 ATM barometric sealing.
Within the Audemars Piguet Royal Oak horological sub-silo, collectors also compare the Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Baguette Blue Topaz Bezel 18K White Gold Ref. 15412BC.TO.1220BC.01 (224.8g) and the Audemars Piguet Royal Oak Double Balance Wheel Openworked Rainbow 18K White Gold Ref. 15413BC.YY.1220BC.01 (224.1g).
- Parent Brand & Royal Oak Silo Hub: Browse All 147 Certified Audemars Piguet Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Vacuum-Induction Au750 Gold Smelting & Zero-Porosity Casting (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 15412OR.YG.1224OR.01 (Audemars Piguet)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (224.4g), a Fischer XRF spectrometer (18K Rose Gold Au750), and a Witschi Chronoscope (+0.6 s/d, 298 deg).
Does the 224.4g reading match the authentic original Audemars Piguet 15412OR.YG.1224OR.01 weight?
Yes. Our CNC foundry machines the 18K Rose Gold case and bracelet to replicate the exact 224.4g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference 15412OR.YG.1224OR.01?
Reference 15412OR.YG.1224OR.01 is powered by the Audemars Piguet Cal. 3132 Dual-Balance Openworked operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.6 s/d, 298 deg.
How many baguette-cut sapphires and diamonds are set on Audemars Piguet Rainbow Ref. 15412OR.YG.1224OR.01?
Reference 15412OR.YG.1224OR.01 features 36 chromatically graduated rainbow baguette-cut sapphires flush-set into the 18K Rose Gold Au750 bezel alongside 56 brilliant-cut VVS diamonds across the case lugs and crown guards, maintaining a verified total mass of 224.4g.
Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Rainbow Sapphire Bezel 18K Rose Gold Ref. 15412OR.YG.1224OR.01 — XRF Certified Edition
Fischer XRF Verified 18K Rose Gold Au750 • Mettler-Toledo 224.4g • Audemars Piguet Cal. 3132 Dual-Balance Openworked
| Assay Specimen ID & Official Reference | Audemars Piguet — Royal Oak Double Balance Wheel Openworked 41mm | Ref. 15412OR.YG.1224OR.01 | SKU: LAB-XRF-15412OR.YG.1224OR.01-W632 |
|---|---|
| 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) | 224.4g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Off-Catalog 18K Rose Gold Au750 Bezel Set with 36 Graduated Rainbow Baguette-Cut Sapphires and 56 Brilliant-Cut VVS Diamonds on Lugs and Crown Guards • 224.4g 18K Rose Gold • 41.0 mm x 9.9 mm |
| Calibre Reference & Witschi Chronometry | Audemars Piguet Cal. 3132 Dual-Balance Openworked — Swiss Super Clone Mechanical Calibre Regulated to +0.6 s/d, 298 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 • 50m / 5 ATM |
| Dial Metallurgy & Clasp Hallmark Verification | 41.0 mm x 9.9 mm • Rainbow 36 Graduated Sapphires with Solid 18K Gold Applied Hour Markers & Hands • Integrated 18K Rose Gold Solid Link Bracelet & Deployant Clasp with Deep Laser Hallmarks |