Talk:Godra specific Evolution methods/@comment-183.171.181.75-20151017032547/@comment-24191497-20151017142318

Sure. You need a Metal Coat and a Link stone, then "If a specific item must be held while trading, that item must be held while the stone is used." So give the Metal Coat to Onix, then select the Link stone from your inventory and use it on the Onix.

I can't remember finding any Metal Coat lying around, so you probably have to buy it from the Evolution_Mart in Nightshade, which is pretty pricey (₽10,000). But yeah, possible.