What is Rhodium? - By: blog.RubyLane.com, 2009-09-28

In its natural solid state, Rhodium is far too hard to work, but is used as an alloy in the smelting of platinum and palladium for use in fine jewelry because it adds hardness and durability to the platinum. Okay, but that seller at the market was selling a costume brooch, so why did she refer to it as rhodium? That's easy.

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