10 karat white gold filigree pendant featuring a stunning rectangular shaped onyx and a dazzling small round diamond set in the center. The onyx measures 26x20mm. The pendant is 1 1/8" long and weighs 2.9 dwt. It includes a 14 karat 18" long chain and dates to the 1920's. All stones are original. The metal content is unmarked and has been tested using an electronic tester.