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Il Decamerone Di M. Giovanni Boccaccio

His years in London, 1732–45 were fruitful ones. They coincided with a period when Britain and France were not at war. Though French-trained craftsmen, engravers and even some painters, were already working in London, but the Rococo style in luxury works of art was relatively new: the Spitalfields silk industry, always dominated by Parisian innovations rendered by Huguenot designers and weavers, produced its earliest asymmetrical and naturalistic floral designs in the early 1730s, and the earliest identified full-blown Rococo piece of London silver, by the second-generation Huguenot Paul de Lamerie, can be dated about 1731. Gravelot's trip was not a speculation; he had been invited by Claude du Bosc to engrave designs for an English translation of Bernard Picart's Ceremonies and Religious Customs of... the Known World. The chronicler of English art and artists George Vertue, an engraver himself, soon took note of Gravelot: "His Manner of designing neat and correct much like Picart" he noted in 1733. "A very curious pen & writes neatly. He has been lately in Glocestershire where he was imployed to drawn Antient Monuments in Churches & other Antiquities... He has tryd at painting a small piece or two."

George Vertue noted in 1741 that Gravelot's "drawings for Engraving and all other kinds of Gold & Silver works shews he is endowed with a great fruitfull genius for desseins inventions of history and ornaments"

By that time Gravelot had become a central figure in the artistic set that gathered at Slaughter's Coffee House in St Martin's Lane and formed the St. Martin's Lane Academy organised by William Hogarth in the premises of his father-in-law Sir James Thornhill. The St. Martin's Lane Academy was an unofficial precursor of the Royal Academy at a time when there were no public exhibitions of art in London, no annual salons as in Paris, no public museums and no places to see or copy from good examples of paintings save in the houses of the rich or noble. As a drawing-master Gravelot had Thomas Gainsborough for a pupil.

Gravelot's rococo book illustrations in London reached a peak in the designs he contributed to Theobald's 1740 edition of the complete works of William Shakespeare, for which Gravelot provided 35 frontispieces.

Anti-French sentiments in London after the Battle of Fontenoy in 1745 forced Gravelot's return to Paris that October, accompanied by his student Thomas Major, later the first engraver voted an Associate of the Royal Academy, and with a fortune of 10,000 pounds sterling; there he soon settled down as a book illustrator: among his book illustrations, projects were Tom Jones (Paris and London, 1750), Manon Lescaut (1753, illustration, left) a Décaméron (1757), La Nouvelle Héloïse (1761), the Contes moraux of Marmontel (1765), a French translation of Ovid's Metamorphoses (1767–71), and of Torquato Tasso's Gerusalemme Liberata (1771). He died in Paris.

His illustrations of contemporary manners and costumes are known to have influenced English artists. Gravelot revitalized illustrative engraving in England, and after his return to Paris, a group of accomplished engravers continued to work in his manner. The descriptive precision and elegance of his line and the variety of his inventions can be seen in the drawings for two of his more important commissions, the second volume of Gay’s Fables and the second edition of L. Theobald's The Works of Shakespeare in Eight Volumes, and in his illustrations for the first French translation of Boccaccio Le Decameron, 1757. The books are listed by Gordon Ray as one of the most outstanding illustrated books of all time.

Gravelot's designs for the decorative arts were limited to a suite of engravings for wrought iron work, but his rocailles, his cartouches for maps, his rococo borders provided inspiration for goldsmiths and silversmiths, cabinet-makers like Thomas Chippendale, tapestry cartoons made at the Soho works, and china painters at the Chelsea porcelain manufactory.

Gravelot's older brother was the geographer Jean-Baptiste Bourguignon d'Anville, whose "Éloge de M. Gravelot" appeared in La Nécrologie des hommes celebres de France (Paris 1774).