An exquisite Antique Victorian Agate Ring, Ostby Barton Vintage, circa 1900. This beautiful estate ring holds a lovely piece of Scottish agate at its center. The setting was made by Ostby and Barton, one of the leading jewelers of fine jewelry at the Turn of the Century. The setting is marked OB and Sterling. One of the founders of Ostby Barton parished on the Titanic, making their pieces historically interesting. The setting has ornate sides and is composed of sterling silver. Overall the ring is about 9/16 inch long by about 3/4 inch wide from side to side. Ring Size: about 6 (could be resized by your jeweler or ask me about using mine before shipping). The ring was acquired through an estate collection and is in lovely vintage condition.