An 18ct white gold amethyst and diamond dress ring, by De Grisogono

An 18ct white gold amethyst and diamond dress ring, by De Grisogono Of concave design, the centre pavé-set with circular-cut amethysts inset with nine triangular-cut diamond collets, to the pavé-set diamond raised shoulders, <i>European Convention mark, finger size Q</i> Signed De Grisogono Geneve, no. B17351