modified
gilded, golden, plated, gold-washed, tinseled, glittering, showy, gaudy, specious, meretricious, painted, varnished, shiny, sparkling, gleaming, lustrous, gold-filled, alloyed, overlaid, gold-edged, tinsel, trumpery, tawdry, cheap, brummagem*.
Antonyms genuine*, solid gold, 18-carat.