These babies were made in 1982 / 1983 by the Danish company Amsterdam Diamond. Made in an art deco revival style these are stunning and in excellent shape. These are sterling silver set with marcasites and a square of black onyx. They are articulated, and dangle from the post stud backing. On the back, they are stamped 925, ADI, and Thailand. There are no marcasites missing and these earrings have been surface cleaned only. To achieve a bright silver finish, these would need a professional…