An erbium and glass cast of Mountain Pass Mine by artist, Anna Mlasowsky (1984- ). The Mountain Pass Mine is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California. In 2020 the mine supplied 15.8% of the world's rare-earth production. The "Mine Vessel" is made with erbium pink colored glass, a mineral found at the site.

Mlasowsky's glass artwork explores and interprets the connections between rare earth elements, their extraction, and their uses, including their effects as glass colorants. Pink erbium ions, which have optical fluorescent properties particularly useful in certain laser applications, are incorporated into the glass compound of this piece, causing its characteristic pink appearance.