Preowned, gold tone choker with underlying sterling silver & 2 circ CZ diamonds

Preowned Chocker-very interesting and Eye catching gold tone choker, which has underlying sterling silver and two round I would say, just larger than the size of a one ( l )carat round diamond (CZ) which is followed by a gold tone chain with a circular accessory on the right side just before the clasp with the following engraved: sterling and CZ