Rare-earth materials have been in a slump and the companies in that sector are no different. Molycorp (NYSE: MCP) is down roughly 40% year to date, so the question remains: Is the stock finally cheap enough to buy. Furthermore, with the potential of a new rare-earth deposit in Wyoming going to competitor Rare Element Resources (NYSEMKT: REE), Molycorp faces several challenges.

In the video below, Fool.com contributor Doug Ehrman discusses the current position of the stock and why, despite still qualifying as a highly speculative play, you may wish to consider the stock for your commodity portfolio.