18K solid gold jewel ring with brilliant emerald and diamonds PB 4.54gr 20th century

18 carat white gold ring (eagle's head hallmark), with a central square-shaped plate centered with a beautiful emerald, surrounded by small brilliant diamonds, from the 20th century;
This ring is in good condition overall and is of good quality. It can be used as an engagement ring.
Please note: slight dirt and micro-scratches, see photos.