- 13.035 in a coat of gold-plated rings,
Although the nouns “gold-plate” and “gold-plating” are in OED, this word is not. That seems very strange to me, so I double-checked. “Plated” is a perfectly good adjective, and it seems that various combinations with the metal which is doing the plating does not make compound words, according to the OED editors.
“gold, n.1.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/79763. Accessed 13 September 2017.
“plated, adj.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/145355. Accessed 13 September 2017.