This is a fabulous statement ring crafted in Italy from 18K yellow gold. It features a lovely natural cabochon emerald that is approximately 0.3 carats and accented by 16 sparkling white diamonds, that total approximately 0.16 carats. The emerald has some inclusions (see photos) and is a beautiful saturated green color. 
It is stamped 750, another way to indicate 18K. Also stamped on the band: a star (indicating Italy), 890 (the identifier for the maker), and AR (indicating the Arezzo region of Italy). The ring is a size 7.25 and should be able to be sized by a jeweler, depending on size increase or decrease and how it may affect the ridges on the band that go all the way around. There are some scratches and dings in the high-polish gold surface, but overall in good condition. Tons of gold in this piece at just over 11 grams. Don’t miss out on this great piece!