Ormolu
The English term ormolu is derived from the French or moulu – ground gold – and traces its origin to an early gilding technique in which ground gold is suspended in mercury, the solution then brushed onto the bronze casting and the piece placed in a charcoal fire to burn off the mercury. Because this process gives off hazardous fumes it has been prohibited in many countries in favor of an electrolysis process developed in the mid-19th century.