fire gilding

noun
  1. a process of gilding metalwork in which the metal base is coated with an amalgam of gold and mercury, the latter subsequently being driven off by heat.

Origin of fire gilding

First recorded in 1825–35
Also called amalgam gilding.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for amalgam gilding

Historical Examples of amalgam gilding