A hardstone intaglio necklace, intaglios Roman, 1st-3rd century AD and later, set with a sequence of

A hardstone intaglio necklace, intaglios Roman, 1st-3rd century AD and later, set with a sequence of thirteen ancient Roman and 18th century intaglios, each in a gold collet setting, to a double back chain, the intaglios including: Hermes in profile and lady in profile, carnelian, both 18th century; Hercules tearing a youth from horseback, amethyst, 18th century; a nude warrior bearing arms, possibly Achilles, chrome chalcedony, 1st-3rd century AD; a young satyr with hunting stick (pedum), bloodstone, Roman, 1st-2nd century AD; the Nemean lion, carnelian, 1st-2nd century AD; two juxtaposed satyr masks, carnelian, 2nd-3rd century AD; an old satyr in profile, carnelian, 18th century; a charioteer in biga, carnelian, 2nd-3rd century AD; a figure of Victory seated on a cuirass holding a wreath, chrome chalcedony, 1st-2nd century AD; a seated lion, bloodstone, 18th century; a standing lion within an orlo etrusco border, carnelian, Late Etruscan/Italic 2nd-1st century BC; and Cupid kneeling with an offering before a statue of Priapus, Roman, 1st-2nd century AD, largest intaglio 1.2 x 1.8cm, necklace length 41cm