gold-plate

[gohld-pleyt]
verb (used with object), gold-plat·ed, gold-plat·ing.
  1. to coat (base metal) with gold, especially by electroplating.
  2. to incorporate costly features or refinements into (something) unnecessarily: The engineers were accused of gold-plating the construction project.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for goldplated

gold-plate

verb
  1. (tr) to coat (other metal) with gold, usually by electroplating
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012