Enamel is powdered glass fused onto a metal surface by firing in a kiln, where it melts, bonds, and sets into a hard, vitreous layer. In the hands of skilled craftsmen, it produces colours of extraordinary depth and durability. Different techniques produce different results, and Cartier's workshops used several of them depending on the object and the effect required.
Champlevé
In champlevé, channels or recesses are carved or engraved into the metal, and enamel powder is packed into these recesses and fired. The result is enamel sitting level with or slightly below the metal surface between the channels. Champlevé was widely used on Cartier's earlier objects, including pocket watch cases and small decorative boxes, where it produced bold, defined areas of colour within a gold or silver matrix.
Cloisonné
Cloisonné uses thin strips of metal, called cloisons, soldered onto the base surface to create small cells. These cells are filled with enamel and fired. The technique is associated with Asian decorative traditions and appears in Cartier's work partly as a direct reference to Chinese and Japanese lacquer and enamel objects that the firm collected and studied.
Plique-à-jour
The most technically demanding form, plique-à-jour has no metal backing: the enamel is suspended in a framework of metal cells, like stained glass, allowing light to pass through it. The effect is translucent and luminous. It appears in Cartier's Art Nouveau-influenced work in the early twentieth century, though it was never a dominant technique for the firm, whose work in subsequent decades moved towards bolder, more opaque colour.
Painted Enamel and Miniature Work
Miniature painting in enamel, applied with a very fine brush onto an enamel ground and then fired repeatedly to build up layers of colour, was used on the lids of vanity cases, powder boxes, and the cases of pocket watches. These miniatures could depict landscapes, portraits, or figural scenes, and their quality varies significantly from piece to piece. The finest examples are tiny masterworks; they draw on an eighteenth-century French tradition of miniature painting that Cartier's designers would have known well. A specific variant within this tradition is grisaille enamel, in which the palette is restricted to graduated grey tones to produce monochromatic figurative scenes with the quality of a print or drawing.
Guilloche Under Enamel
One of Cartier's most distinctive effects combines guilloché engine-turning with translucent enamel. The metal is first engraved with a repeating geometric pattern by a rose engine lathe; translucent enamel is then applied over the top. Light passes through the enamel, reflects off the pattern below, and returns through the enamel again, producing a shimmer and depth that neither technique could achieve alone. This combination appears on watch dials, cigarette cases, vanity objects, and small boxes throughout Cartier's twentieth-century production.
The London Workshop and Enamel Tanks
The London branch of Cartier developed a particular reputation for enamel work. The London workshop produced enamel-dialled Cartier Tank watches in which the entire dial surface was covered in translucent or opaque enamel, sometimes in rich blues, greens, or blacks that gave the watches a character distinct from the standard cream or white dial. These pieces were made in relatively small numbers and represent some of the most distinctive London workshop production.
Later Use
Enamel continued to appear across Cartier's output through the Art Deco period and beyond, most prominently in cigarette cases, boxes, and decorative objects, where it provided areas of pure colour within geometric designs. The bold, flat colour panels of an Art Deco Cartier cigarette case are as much a product of the enamel tradition as the subtler guilloche-under-enamel effects of the Belle Époque years.
Sources
- Francesca Cartier Brickell, The Cartiers (Ballantine Books, 2019), ch. 2 (“Louis, 1898–1919”) and ch. 5 (“Stones Paris: Early 1920s”)
- Hans Nadelhoffer, Cartier: Jewelers Extraordinary (Thames and Hudson, 1984; revised 2007), p. 159.
- Wikipedia: Enamel in Cartier Work
