Through his artistic connections, Mariette was named a member of the prestigious
Accademia delle Arti del Disegno, Florence, in 1733. His knowledge of prints and his close friendship with Caylus and the artist
Charles-Antoine Coypel secured him a position reorganizing the
old master print collection of the Bibliothèque Royale. In 1741 Mariette was asked to write the sale catalogue of Crozat's collection of paintings and antiquities, the first example of the modern descriptive
sale catalogue. He purchased some of Crozat's drawings at the sale himself; a provenance from Mariette's collection, with its discrete collector's stamp, adds allure even to great
Old Master drawings: a head by
Andrea del Sarto, from the collections of
Giorgio Vasari, Crozat and Mariette fetched £6,504,000 (ca $11,740,072) at auction in 2005 Mariette engraved and printed several plates, an aspect of the family business. His engravings illustrated the ''Cours d'architecture qui comprend les ordres de Vignole ä ceux de Michel-Ange'' of
Augustin-Charles d'Aviler (Paris, 1760), Before the death of his father in 1742, Mariette had already been running the family publishing and print-making business, an aspect of his career often overlooked by art historians. The firm had published
Pierre Fauchard's
Le chirurgien dentiste, ou traité des dents 1728, the first modern work on dentistry and a milestone of medical history, By 1750 he sold the family business that he had inherited in 1744, in order to purchase the office of
Contrôleur Général de la Grande Chancellerie, a sinecure that allowed him to devote the rest of his life to his researches and to increasing his celebrated collection. He concentrated on prints and drawings, but also included paintings, bronzes and terracottas. Among his great drawings was a
Michelangelo study of a nude for the
Sistine Chapel. He shared Crozat's taste for the drawings of
Rubens: at Crozat's sale he purchased sixty-two of the finest for his own collection. When his collections were dispersed at auction after his death, 1266 drawings were acquired by the Crown; they now form part of the collection at the
Bibliothèque nationale. The albums of more than 3500 prints mounted on fine paper, which had been begun by his father, Jean Mariette, passed into the collection of the
Earls Spencer. These "Spencer Albums" of Mariette's prints are one of the most important acquisitions made by the
Harvard University Art Museums in recent years. The albums include
etchings and
engravings in a near-perfect state of preservation by Italian, Dutch, and Flemish printmakers, including
Jacques Callot,
Jusepe de Ribera, and
Adriaen van Ostade. Mariette also collected contemporary French paintings, Although he was immune to the forceful realism of
Chardin, the more sentimental charm of
Greuze found a place on his walls: Greuze's
Young Peasant Boy, shown at the
Salon of 1763 had already been purchased by Mariette, together with its pendant, before it was exhibited. Mariette's further published works were not many. In 1750 he published a
Traité historique des pierres gravées du Cabinet du Roi, on the
hardstone carvings in the royal collection. His reputation as a connoisseur, who laid down the principles by which the hands of Italian master drawings could be ascertained, led to him being made an associate, then an honorary (1757) member of the
Académie royale de peinture et de sculpture. In 1764-65 he got into a public dispute in the pages of the ''Gazette littéraire de l'Europe'' with
Giovanni Battista Piranesi, whom Mariette admired greatly as an artist, over Piranesi's polemical stand that the magnificence of Roman art derived from its Etruscan roots, rather than from its Greek borrowings Mariette's circle of friends was large, included
Andre-Charles Boulle and was broad enough to define the state of art connoisseurship in France during his time, beginning with the circle he met at the houses of the prodigious collection
Pierre-Antoine Crozat, where besides artists like
Antoine Watteau and the classicizing sculptor
Edmé Bouchardon, Mariette met the abbé de Maroulle and the
comte de Caylus, who helped sharpen his eye. Mariette married Angélique-Catherine Doyen in 1724. He acquired a country house at Croissy, which he named "Le Colifichet" was ennobled during the reign of Louis XV, and honored with the
Order of the Saint-Esprit. ==Mariette's dictionary of artists==