Lalaounis, Ilias. Metamorphoses. 1974. Many similar works illustrated in the book identify this ring as part of the "Byzantium Collection".
Ilias Lalaounis
Greece (1920-2013)
18K Yellow Gold and Gemstone Ring
18K yellow gold ring set with a cabochon saphhire measuring approx. 4.5mm, 4 round-cut emeralds each measuring approx. 3.10 mm, and two round-cut rubies each measuring approx. 3.42 mm.