Les diamants de la couronne (The Crown Diamonds) is an opéra comique by the French composer Daniel Auber, first performed by the Opéra-Comique at the second Salle Favart in Paris on 6 March 1841. The libretto (in three acts) is by Auber's regular collaborator, Eugène Scribe with the help of Jules-Henri Vernoy de Saint-Georges.
The opera was performed at the Opéra-Comique 379 times up to 1889, under the title Les diamants de la reine, and was revived in Marseilles on 20 March 1896.
Outside France it was first performed in Brussels on 25 November 1841, New Orleans on 31 March 1842, Munich on 15 July 1842 (in a German translation by V. A. Swoboda), Prague on 13 August 1842 (in German), Hamburg on 29 October 1842 (in German), Riga in 1843 (in German), Amsterdam in 1843 (in French), Berlin at the Hofoper on 11 February 1843 (in German), Copenhagen on 17 February 1843 (in a Danish translation by T. H. Reynoldson), New York on 14 July 1843 (in French at Niblo's Opéra français with Julie Calvé), London at Princess's Theatre on 2 May 1844 (in an English translation by T. H. Reynoldson) and later at Covent Garden on 11 June 1845 (in French) and Drury Lane on 16 April 1846 (in a new English translation by E. Fitzball, with additional music by H. B. Richards and J. H. Tully).