Nudo Classic 18-karat rose gold amethyst ring, The 'Nudo' ring is one of Pomellato's most iconic pieces. Handmade in the label's Milanese atelier, this 18-karat rose gold 'Classic' design holds a faceted amethyst stone in an 18-karat white gold setting. Stack yours with similar styles from the collection Size: 11. Gender: Female. Age Group: Adult.