Crafted from recycled sterling silver plated in 18 carat gold vermeil, this medium green onyx stacking ring is part of Monica Vinader's Siren collection, inspired by sea-worn treasures and the glamour of Southern Italy. Designed specifically for stacking, this ring features a single rose cut green onyx stone in a high-polished bezel setting. The stone's irregular shape recalls a pebble found on the seashore, while the lightly hammered band adds an organic finish, reminiscent of the sea. Style it alone for a fresh everyday look or team it with several other Siren stacking rings for a colour-rich, contemporary curation.