This is a really striking sterling silver necklace made in Mexico. The necklace is 16" long and has a sturdy push-button clasp. Made of round medallions of silver inset with black onyx. The different disks are held together with rings connected to fittings on the back of each disk. The largest disk is 18 mm diameter and those on either side are about 15 mm, the next 11mm and the remainder about 9 mm in diameter, all are about 4 mm thick. This piece is quit...e heavy, 72g. Marked ATI Mexico 925 on the large disk. Lots of hand work to generate the components and then assemble this piece, each piece of onyx is bezel set. Ready to wear.