Natural mined black diamond circle necklace in sterling silver

The pendant has an openwork design composed of various interlocking and overlapping silver-tone circles. The outermost circle and a smaller inner circle are embellished with black diamonds creating a contrasting two-tone effect. The necklace is presented in a box labeled "STERLING SILVER," indicating the material of the piece. The back of the pendant shows the same openwork design. The chain is 18 inches.