More Details Konstantino statement ring from the Amphitrite Collection. Signature carved sterling silver with 18-karat yellow gold accents. Cushion-cut sea blue agate in ornate bezel setting at face. Two naturally hued freshwater cultured pearls, 3mm. 2.0 total sea blue agate carat weight. Wide, etched shank and accents. Signature mixed granules. Approx. 0.5"L stone. Handcrafted in Greece.