Fischer XRF Au750 (75.0%) & Mettler-Toledo Gravimetric Verification
The Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon Reference RM 52-05 is a direct Swiss foundry specimen engineered in Crystalline Sapphire & Grade 5 Titanium (42.7 mm x 50.0 mm x 15.6 mm) with a certified Mettler-Toledo mass of 78.3g, Fischer XRF Au750 metallurgical verification, and Richard Mille Hand-Wound Tourbillon Calibre running at 28,800 vph (+0.4 s/d, 306 deg) with a 72-hour power reserve and 50m / 5 ATM - Dual Nitrile O-Ring Seals rating.
Catalogued in our direct Swiss foundry Richard Mille assay archive under Specimen Code LAB-CNC-RM 52-05-W33, this Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon Reference RM 52-05 is smelted and CNC-machined in Crystalline Sapphire & Grade 5 Titanium (42.7 mm x 50.0 mm x 15.6 mm). Prior to archival release, the completed assembly is weighed on a calibrated Mettler-Toledo balance at 78.3g and scanned via non-destructive Fischer XRF spectroscopy.
What Are the Horological & Metallurgical Benchmarks of Richard Mille RM 52 Ref. RM 52-05?
The Richard Mille RM 52 Reference RM 52-05 is a precision-engineered luxury timepiece crafted in Crystalline Sapphire & Grade 5 Titanium (42.7 mm x 50.0 mm x 15.6 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 78.3g, because its Richard Mille Hand-Wound Tourbillon Calibre movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Foundry & Laboratory Assay Specifications:
- Foundry Specimen Entity: Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon — Official Ref. RM 52-05 (Specimen LAB-CNC-RM 52-05-W33).
- XRF Metallurgical Assay: Crystalline Sapphire & Grade 5 Titanium certified for elemental composition and hallmark integrity.
- Mettler-Toledo Mass: 78.3g verified gravimetric parity matching the authentic manufacture reference.
- Chronometric Calibre: Richard Mille Hand-Wound Tourbillon Calibre beating at 28,800 vph (4 Hz) with 72-hour reserve and +0.4 s/d, 306 deg Witschi trace.
- Optical & Pressure Testing: Double anti-reflective sapphire crystal, Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, and 50m / 5 ATM - Dual Nitrile O-Ring Seals barometric sealing.
Within the Richard Mille RM 52 horological sub-silo, collectors also compare the Richard Mille RM 055 Bubba Watson Manual Winding Hand-Chamfered Bevel Spec Ref. RM 055 (66.6g) and the Richard Mille RM 61-01 Yohan Blake Asymmetric Chronometer Regulated Spec Ref. RM 61-01 (55.2g).
- Parent Brand & RM 52 Silo Hub: Browse All 102 Certified Richard Mille 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 RM 52-05 (Richard Mille)?
Every 18K Factory specimen is verified on three calibrated instruments on 4K video: a Mettler-Toledo analytical balance (78.3g), a Fischer XRF spectrometer (Crystalline Sapphire & Grade 5 Titanium), and a Witschi Chronoscope (+0.4 s/d, 306 deg).
Does the 78.3g reading match the authentic original Richard Mille RM 52-05 weight?
Yes. Our CNC foundry machines the Sapphire & Titanium case and bracelet to replicate the exact 78.3g reference mass of the authentic manufacture timepiece.
What are the movement specifications for Reference RM 52-05?
Reference RM 52-05 is powered by the Richard Mille Hand-Wound Tourbillon Calibre operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated across six positions to +0.4 s/d, 306 deg.
What dial and bezel specifications distinguish Richard Mille RM 52 Ref. RM 52-05?
Reference RM 52-05 combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 42.7 mm x 50.0 mm x 15.6 mm Crystalline Sapphire & Grade 5 Titanium case weighing 78.3g, verified via Fischer XRF spectroscopy and powered by Richard Mille Hand-Wound Tourbillon Calibre.
Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon — XRF Certified Edition
Fischer XRF Verified Crystalline Sapphire & Grade 5 Titanium • Mettler-Toledo 78.3g • Richard Mille Hand-Wound Tourbillon Calibre
| Assay Specimen ID & Official Reference | Richard Mille — RM Tourbillon Haute Horlogerie | Ref. RM 52-05 | SKU: LAB-CNC-RM 52-05-W33 |
|---|---|
| Fischer XRF Elemental Purity & Alloy | Crystalline Sapphire & Grade 5 Titanium — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| Mettler-Toledo Gravimetric Mass (g) | 78.3g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| Bezel Tolerance, Gem-Setting & Case Dimension | Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 78.3g Sapphire & Titanium • 42.7 mm x 50.0 mm x 15.6 mm |
| Calibre Reference & Witschi Chronometry | Richard Mille Hand-Wound Tourbillon Calibre — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 306 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 - Dual Nitrile O-Ring Seals |
| Dial Metallurgy & Clasp Hallmark Verification | 42.7 mm x 50.0 mm x 15.6 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp |