18K DIAMOND AND ONYX ART DECO STYLED EARRINGS SIGNED WINC: Strongly architectural in design are these 18K yellow gold earrings with carved black onyx and .25 Ctw diamonds. Post and hinged clip closures. 7/8'' x 7/8''. Weight 15.4 grams. Sold with current Atlanta Gemological GIA graduate's appraisal for $2,450.