As the "King of Shapes" in Parisian and Swiss horology, Cartier's solid 18K yellow and rose gold creations—led by the full-bracelet Santos de Cartier Large Ref. WGSA0007/WGSA0019 (176.2g), the Santos-Dumont Micro-Rotor Skeleton, the surrealist London/Paris Crash, and the Ballon Bleu 42mm—combine geometric Au750 case sculpture, blue sapphire cabochon crowns, and QuickSwitch/SmartLink bracelet engineering.
Key Quantitative Laboratory Takeaways
- On a full solid 18K yellow or rose gold bracelet, the Santos de Cartier Large (39.8 mm x 9.08 mm) weighs 176.2 grams and features patented SmartLink push-button link removal and QuickSwitch strap release.
- Unlike steel Santos models that use synthetic spinel, solid 18K gold and platinum Cartier watches are crowned with a genuine faceted or cabochon-cut natural blue corundum sapphire.
- The Cartier Crash in solid 18K gold features an asymmetrical free-form case and contoured mechanical Calibre 8970 MC / 1917 MC weighing 64.5g on alligator or 142.0g on an 18K gold pebble bracelet.
- Every Cartier piece in the Monte-Carlo Register carries both the Swiss St. Bernard hallmark and the Parisian French Eagle Head Au750 stamp.
| Cartier Model & Reference | Precious Metal Alloy | Case Dimensions | Crown Gemstone | Verified Mass (g) | Calibre |
|---|---|---|---|---|---|
| Santos de Cartier Large WGSA0007 | 18K Yellow Gold (Full Bracelet) | 39.8 x 47.5 x 9.08 mm | Faceted Blue Sapphire | 176.2g | Cal. 1847 MC Auto |
| Santos de Cartier Large WGSA0019 | 18K Rose Gold (Full Bracelet) | 39.8 x 47.5 x 9.08 mm | Faceted Blue Sapphire | 177.4g | Cal. 1847 MC Auto |
| Santos de Cartier Medium WGSA0010 | 18K Yellow Gold (Full Bracelet) | 35.1 x 41.9 x 8.83 mm | 7-Sided Blue Sapphire | 142.8g | Cal. 1847 MC Auto |
| Santos-Dumont Skeleton WHSA0028 | 18K Yellow Gold (Alligator) | 31.0 x 43.5 x 8.00 mm | Blue Sapphire Cabochon | 68.4g | Cal. 9629 MC Micro-Rotor |
| Cartier Crash London/Paris 18K | 18K Yellow / Rose Gold | 25.5 x 38.5 x 8.40 mm | Pointed Sapphire Cabochon | 64.5g – 142.0g | Cal. 8970 MC Manual |
| Ballon Bleu 42mm Ref. WGBA0006 | 18K Rose Gold (Full Bracelet) | 42.1 x 13.00 mm | Guarded Sapphire Cabochon | 194.5g | Cal. 1847 MC Auto |
Why the Solid 18K Gold Santos de Cartier (176.2g) Is the Ultimate Dress-Sport Crossover
Originally designed by Louis Cartier in 1904 for Brazilian aviator Alberto Santos-Dumont as the world's first purpose-built wristwatch, the modern Santos de Cartier Large in solid 18K yellow gold (Ref. WGSA0007, 176.2g) or 18K rose gold (Ref. WGSA0019, 177.4g) pairs a 9.08 mm slim square bezel fastened by eight functional screws with an integrated solid gold bracelet. Thanks to the concealed QuickSwitch latch beneath the lug and SmartLink push-buttons inside each removable gold link, the wearer can resize the solid 18K gold bracelet or swap to an alligator strap in seconds without a screwdriver.
Natural Blue Sapphire Cabochons vs. Synthetic Spinel Crowns
A classic horological rule of Maison Cartier is that stainless steel models are fitted with a synthetic blue spinel crown cabochon, whereas solid 18K gold and 950 platinum references receive a genuine natural blue corundum sapphire (either faceted heptagonal on the Santos or domed cabochon on the Ballon Bleu, Tank Louis, and Crash). Coupled with kiln-fired blued steel sword hands oxidized at 290°C to a rich cornflower blue and a railway chemin de fer minute track, the aesthetic harmony against warm 18K gold is unmistakable.
| Design Element | Solid 18K Gold Cartier Specification | Steel / Entry Model Comparison |
|---|---|---|
| Winding Crown Stone | Genuine Natural Blue Corundum Sapphire (Mohs 9.0) | Synthetic Blue Spinel (Mohs 8.0) |
| Dial Finish & Track | Silvered Opaline or Sunburst Gold + Chemin de Fer Track | Standard Matte Opaline |
| Hands Treatment | Kiln-Fired Blued Steel Sword Hands (290 deg C Oxidation) | Chemical-Tinted or Rhodium Hands |
| Bracelet Engineering | Solid Au750 Links + SmartLink Push-Pins + QuickSwitch | Steel Links |
| Caseback Hallmarks | 750 Scales + Swiss St. Bernard + Cartier Paris/Swiss Eagle | Stainless Steel Engraving Only |
Sculptural Mastery: The Cartier Crash and Santos-Dumont Micro-Rotor Skeleton
For collectors seeking museum-tier shaped horology, our Monte-Carlo Register curates both the asymmetrical Cartier Crash—whose molten surrealist solid 18K gold case houses a contoured manual-wind mechanical movement—and the Santos-Dumont Skeleton Ref. WHSA0028, where the openworked Roman numeral bridges support a functional miniature Demoiselle airplane micro-rotor at 8 o'clock.
Explore Verified Cartier Solid 18K Gold References in Our Register
Every timepiece referenced in this monograph is available for immediate allocation with pre-shipment 4K Mettler-Toledo gram weighing, Fischer XRF Au750 spectroscopy, and 6-position Witschi Chronoscope certification. Navigate directly to the 18K WATCHES Homepage Master Register, the Cartier Solid 18K Gold Collection Hub, or the Complete 774-Watch Catalogue:
25 Years in Monte-Carlo & Geneva Collector Horology, Author of The Sovereign Precious-Metal Watch Index.
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