More Details Konstantino cocktail ring from the Astritis Collection. Approx. 1.06"L x 0.86"W. Sterling silver with 18-karat yellow gold. Large, faceted green amethyst in carved filigree setting. Carved, coiled serpentine prongs secure amethyst. 15.0 total amethyst carat weight. Tapered half-round shank with floral-carved sides. Handcrafted in Greece.