Sterling Silver Gold Tone Cultured Pearl Topaz Necklace

Sterling silver necklace with gold tone and 10kt gold plating with cultured pearl minimalist pendant accented with white topaz. Chain is gold tone but the pendant is stamped 10kt GP, accent stones test in topaz range on presidium gem tester. Chain measures 18 inches length, pendant measures 13/16ths of an inch length and 1/4th of an inch at widest point at the pearl. Stamped 925, 10ktGP, and acid tests positive for sterling silver. B