Massin — The 19th-Century Jeweller Who Took the Metal Out of the Way
Massin — The 19th-Century Jeweller Who Took the Metal Out of the Way
Oscar Massin and the en tremblant settings that let Belle Époque diamonds breathe
Oscar Massin (1829–1892) was a French jeweller whose work in mid- and late-19th-century Paris is one of the foundational chapters of modern diamond setting. Massin's contribution was to push the second half of the 19th century toward the ideal of the airy mount — the open, low-profile setting in which the metal recedes and the diamond is exposed to maximum light from all angles. His refinement of the en tremblant principle (mounting gems on flexible springs to add motion to brilliance) and his pioneering work on knife-edge and light fabrication settings are documented in the standard literature of 19th-century French jewellery and in the surviving pieces held by the Victoria and Albert Museum, the Musée des Arts Décoratifs in Paris, and major private collections.
The en tremblant principle
The en tremblant — French for trembling — is a setting in which a gem-set element is mounted on a small flexible spring or articulated joint, so that the slightest movement of the wearer causes the element to oscillate. The motion produces an additional dimension of optical effect: the brilliance of a diamond, already substantial when stationary, is amplified when the diamond is moving relative to the light source and the eye. The principle was not Massin's invention — en tremblant settings appear in 18th-century court jewellery and earlier — but Massin refined the construction to a level of mechanical precision and visual subtlety that distinguishes his work from the heavier 18th-century antecedents.
Massin's en tremblant pieces typically feature flower or leaf elements — rose blooms, leaf clusters, sprays of bouquets — mounted on hidden springs at the base of the stem, with the visible elements appearing to float above the wearer's bodice or hair and to move with the lightest motion. The springs are mechanical jewellery in the strict sense: the action is engineered to produce a controlled oscillation rather than a random vibration.
Open settings and minimal metalwork
Beyond the en tremblant work, Massin is associated with the broader 19th-century movement toward open, low-profile diamond settings. The earlier French and English diamond-setting tradition, through the 18th and early 19th centuries, used closed-back foiled settings (in which the diamond was backed by silver foil to enhance its colour and brilliance, and the setting was solid below the stone). Through the mid-19th century, with the development of the modern brilliant cut and the recognition that diamonds did not require foiling, the trade transitioned to open settings — settings with no metal beneath the stone, allowing light to enter from below as well as from above. Massin was among the most articulate and consistent practitioners of this transition; his settings used minimal metal, exposed the diamond from all angles, and prefigured the knife-edge and platinum settings that would dominate the late-19th-century and Belle Époque period.
Surviving work
Massin pieces are held in the Victoria and Albert Museum, the Musée des Arts Décoratifs in Paris, and a small number of major private collections. Pieces with secure Massin attribution are rare in the secondary market — much of his work was retailed without his name and is now attributable only through stylistic analysis — and pieces that are known to come from his hand command substantial premium when they appear at auction. His work was widely influential in his own lifetime, and the en tremblant flower brooches that became a central category of late-19th-century European jewellery owe a substantial debt to his refinement of the form.
Position in the historical record
Massin sits in the second half of a 19th-century lineage of French diamond-setting innovators that begins with Jacques and Pierre Bapst in the early 19th century, runs through Frédéric Boucheron and the late-century Place Vendôme houses, and culminates in the Belle Époque platinum-and-diamond work of Cartier, Boucheron, and Vever in the 1900s and 1910s. Massin's contribution is the bridge between the heavier mid-century vocabulary and the airy late-century one; the line that runs from him to the Belle Époque garland-style work of Cartier in the 1900s is direct.
In the trade
For dealers and historians of 19th-century jewellery, Massin is one of the names to know in any discussion of mid- to late-century French diamond setting. The relevant references are Henri Vever's La Bijouterie Française au XIXe Siècle (1908), the Victoria and Albert Museum's catalogues, and the standard French jewellery-history literature.