'Antimony' in the Bible

So I have made every effort to provide what is needed for the temple of my God, including the gold, silver, bronze, iron, wood, as well as a large amount of onyx, settings of antimony and other stones, all kinds of precious stones, and alabaster.

"O afflicted one, driven away, and unconsoled! Look, I am about to set your stones in antimony and I lay your foundation with lapis-lazuli.