The curving scallops of the setting, the elaborate forked shoulders, the warm softness of the 15k gold exist only for the gorgeous Dendritic Agate they hold. Dating from the 1870's, all original, all yours.
Details...Currently a size 6.25, this ring comes with one free sizing. The top measures 19.4mm x 14mm. 5.3mm at the shoulder, and 3.5mm at the back of the band.