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Origin and history

The Royal Manufacture of Mirror Ices of Saint-Gobain was created in 1665 under the leadership of Jean-Baptiste Colbert, Minister of Finance of Louis XIV. Its objective was to break the Venetian monopoly on the production of mirrors, costly and strategic for the glory of the kingdom. Originally based in Paris in the suburbs of Saint-Antoine, the factory benefited from the expertise of Venetian workers recruited — sometimes by force — and from a 20-year monopoly granted to Nicolas du Noyer, his first director. Despite difficult beginnings (high costs, jealously guarded manufacturing secrets), production started in 1666, competing with the mirrors of Venice.

In 1667, in the face of tensions with the Venetian workers and the costs of Paris, manufacturing was transferred to Tourlaville (Normandie), near an existing ice factory led by Richard Lucas de Nehou. The Parisian workshops focused on polishing. In 1672, the factory obtained a ban on imports of Venetian glass, marking a turning point. By the end of Louis XIV's reign, it exported 300,000 to 400,000 pounds of ice cream annually, replacing the Venetian monopoly with a French monopoly.

Competition emerged in 1688 with the Compagnie Thévart, using an innovative casting technique to produce larger mirrors (60x40 inches versus 40x40). This rivalry lasted until 1695, when a merger imposed by the State gave birth to the Plastrier Company. It went bankrupt in 1702, leaving room for Compagnie Dagincourt, run by Geneva and Parisian financiers, including Antoine Dagincourt. The site of Tourlaville, exhausted in wood resources, declined for the benefit of Saint-Gobain, where Louis Lucas de Nehou had installed in 1692 a new unit in the former castle of the Sires de Coucy.

In the 18th century, the factory became an industrial flagship, controlled by influential shareholders such as Pierre François Geoffrin (Financial Director) and his wife, Madame Geoffrin, whose literary fair served to defend the company's interests. Their daughter, the Marquise of La Ferté-Imbault, used her influence in Versailles to renew royal privileges. The site developed with administrative buildings (1735), a portal (1756), and housing (1775-1785). After the Revolution, the factory became the company of Saint-Gobain, while the former Parisian site (rue de Reuilly) was sold to the Army.

The royal privilege, initially granted by the letters patent of October 1665, was renewed six times until the Revolution. These legal acts guaranteed an exclusive monopoly, tax exemptions and a loan of £12,000. The successive holders (Nicolas du Noyer, Pierre de Bagneux, Antoine Dagincourt, Louis Renard) embodied the close links between the state, finance, and technical innovation. Today, the historic site houses Concept 1900, a company specializing in rides, continuing a tradition of industrial know-how.

The protected buildings (portal, administration, chapels, housing) bear witness to this history. The manufacture symbolizes colbertist ambition: combining royal prestige, economic independence, and technological mastery, while illustrating the challenges of early industrialization (resources, competition, worker management).

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