A rare ring, set with sapphire, emerald and garnets and once owned by a medieval bishop, is coming to auction on March 26 sale of jewelry, silver, and objets d’art at Noonans Mayfair, in London.

The Artemis necklace by Joy BC, recycled 18ct gold and fine 999 silver, on show with manuscripts curated by Les Enluminures, as part of New York Jewelry Week. “The manuscripts and the jewels are both ...