For a similar diamond frame with the date 3 Juillet 1768 on a Louis XVI gold and enamel snuff-box, see Sotheby's, London, 15 December 1969, lot 40.
One of the sitters of the two miniatures, represented as Diana the Huntress, has traditionally been identified as Louise-Bénédicte de Bourbon, Mademoiselle de Charolais, 8th daughter of Henri-Jules, Prince de Condé, who married Louis-Auguste de Bourbon, Duc du Maine, a legitimized son of King Louis XIV and the Marquise de Montespan, in 1692. The other sitter was identified as her half-sister-in-law Marie-Anne de Bourbon, Mademoiselle de Blois, legitimized daughter of King Louis XIV and Mademoiselle de La Vallière, who married Louis-Armand I de Bourbon, Prince de Conti in 1688. It is possible that the latter may be another Princess de Conti, Marie-Thérèse de Bourbon (1666-1732), Mademoiselle de Bourbon, who married in 1688 François-Louis de Bourbon, Prince de Conti, and who was the elder sister of Mademoiselle de Blois. The pair of miniatures would thus depict the 5th and 8th child of Henri-Jules, Prince de Condé. In any case, both miniatures are certainly inspired by paintings by Mignard and the resemblance of the Diana the Huntress to the portrait of Charlotte-Isabelle-Elisabeth-Angélique de Montmorency-Boutteville (1626-1695) from the studio of Mignard (Musée de Versailles, inventory no. MV6728) is compelling.