Natter's talents as a gem-engraver were praised by
Goethe, and
Charles William King called him "one of the greatest of the modern practitioners of the art". His first productions were mainly seals with coats of arms. Writing in 1754, he said that he was always willing to receive commissions to copy ancient gems, but stated that he never sold copies as originals; his productions were often signed. His usual signature on gems was NATTEP or NATTHP. He also often signs YΔROΣ or YΔROY, a translation of the German word
natter, a water-snake.
Georg Kaspar Nagler in his
Künstler-Lexikon, and
Heinrich Bolzenthal, followed in
Edward Hawkins's
Medallic Illustrations, gave Natter's forenames as "Johann Lorenz"; Natter on his gems and medals and on the title-pages of his publications used only the Christian name "Lorenz" (or Laurent, Laurentius, etc.). Among Natter's imitations of the antique was his copy of the Medusa, with the name Sosikles, at that time in the cabinet of
Tiberius Hemsterhuis, a correspondent of Natter's. He also copied the "Julia Titi of Evodus". A description of his works preserved in the Imperial Cabinet at St. Petersburg was given in J. Bernoulli's
Travels, iv. 248.
Books Natter published in 1754
A Treatise on the Ancient Method of Engraving on Precious Stones compared with the Modern, London; it was also published in French in the same year as
Traité de la méthode antique de graver en pierres fines. In Natter gave practical instructions in gem-engraving, and strongly advised beginners to copy from the antique. Godefrid Kraft of Danzig is mentioned by him, as a pupil of his in engraving. The
Treatise did much for his reputation, but in financial terms proved troublesome. Natter also worked for the Dukes of Devonshire and Marlborough. For
George Spencer, 4th Duke of Marlborough he drew up a catalogue of the Bessborough gems, which were incorporated with the Marlborough cabinet. This was published in 1761 as ''Catalogue des pierres gravées tant en relief qu'en creux de Mylord Comte de Bessborough'', London, with plates. ==Notes==