Gravimetric Mass & Chronometric Assay Bulletin
The Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon Reference RM 52-05 is a hallmarked Crystalline Sapphire & Grade 5 Titanium haute horlogerie timepiece measuring 42.7 mm x 50.0 mm x 15.6 mm with a verified Mettler-Toledo mass of 78.3g, powered by Richard Mille Hand-Wound Tourbillon Calibre operating at 28,800 vph (+0.4 s/d, 306 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 50m / 5 ATM - Dual Nitrile O-Ring Seals water resistance.
| I. Official Maison Entity & Reference | Richard Mille — RM Tourbillon Haute Horlogerie | Ref. RM 52-05 | SKU: PV-CUST-RM 52-05-W33 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | Crystalline Sapphire & Grade 5 Titanium — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 78.3g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | 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 |
| V. Mechanical Manufacture Calibre | Richard Mille Hand-Wound Tourbillon Calibre — Swiss Super Clone Mechanical Calibre Regulated to +0.4 s/d, 306 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 • 50m / 5 ATM - Dual Nitrile O-Ring Seals |
| VIII. Dial Finishing, Bracelet & Hallmarked Clasp | 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 |
Curated within our hallmarked solid 18K gold Richard Mille collection, the Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon Reference RM 52-05 exemplifies haute horlogerie metallurgy in Crystalline Sapphire & Grade 5 Titanium. Milled to exact manufacture geometry (42.7 mm x 50.0 mm x 15.6 mm), the monobloc middle case, Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp achieve a verified analytical mass of 78.3g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
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 Horological & Metallurgical Specifications:
- Entity & Reference: Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon — Official Reference RM 52-05 (SKU: PV-CUST-RM 52-05-W33).
- Precious Metal Assay: Crystalline Sapphire & Grade 5 Titanium verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 78.3g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Richard Mille Hand-Wound Tourbillon Calibre beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.4 s/d, 306 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 50m / 5 ATM - Dual Nitrile O-Ring Seals rating.
Within the Richard Mille RM 52 horological sub-silo, collectors also compare the Richard Mille RM 35-02 Rafael Nadal Automatic Crimson Quartz TPT 5-Axis CNC Case Ref. RM 35-02 (50.7g) and the Richard Mille RM 055 Bubba Watson Manual Winding Ref. RM 055 (66.9g).
- Parent Brand & RM 52 Silo Hub: Browse All 102 Certified Richard Mille 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 Richard Mille Ref. RM 52-05?
At 18K Solid Gold 18K Solid Gold Salon, this Richard Mille RM 52-05 Pharrell Williams Crystalline Sapphire Tourbillon Ref. RM 52-05 weighs 78.3g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic Sapphire & Titanium reference.
How is the Crystalline Sapphire & Grade 5 Titanium 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 RM 52-05 and what is its power reserve?
Reference RM 52-05 is equipped with the Richard Mille Hand-Wound Tourbillon Calibre operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop 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 — Salon Edition
Bespoke Atelier Salon Edition • 78.3g Verified Mass • Richard Mille Hand-Wound Tourbillon Calibre