pinchbeck
/ˈpɪntʃbɛk/Definitions
1. noun
an alloy of copper and zinc, or other metals, used for making imitation gold or other metal objects
“The antique shop was selling a pinchbeck brooch that resembled a gold piece”
2. adjective
imitating gold or another metal
“The pinchbeck decorations looked luxurious but were actually inexpensive”