These family portraits of Enns, ancient Roman site Lauriacum in today Austria, come from the Severan period (the end of the 2nd – beginning of the 3rd century). All women wear necklaces, a simple string of beads (like pearls or metal and gemstone / glass beads), or a double string with a central medallion as a girl on the relief nr 4613 from the Lupa.at database (pic. 1 belowe).
pic. 1 http://lupa.at/4613 
pic. 2 http://lupa.at/497 
pic. 3 http://lupa.at/495 
pic. 4 http://lupa.at/492 
pic. 5 http://lupa.at/491
Similar necklaces in color we can see on the portraits from ancient Egypt.
detail http://lupa.at/495 
Portrait of a woman, Roman Egypt, BM Inv. no. EA65346 
BM EA65346
Portrait of a woman from Rubaiyat, Roman period Egypt, is dated to 160-170 C. In the British Museum
daughter http://lupa.at/4613 
mother http://lupa.at/4613 
http://lupa.at/491
Not as good a sculpture as shown above, but also interesting because of the portrait of a woman wearing a necklace with lunula pendant, and the ornament in the form of winged sea-creatures, is the funerary stela of Privatius Silvester from Ennsis dated to 100-150 http://lupa.at/471
http://lupa.at/471 
Similar motif of the sea-griffins can be seeing on sculptures from Hatra, for example, as an ornament on the military commander’s belt. This statue is dated to 2nd-3rd century, is on display in the Iraq Museum in Baghdad.
Photo by Hanming Huang
http://lupa.at/471 
Hatra, military commander