When you think of precious gems in The Wonderful Wizard of Oz, what immediately comes to mind? Emeralds, of course. Why is this? Because the Emerald City is the central metropolis in the Land of Oz. It is the must-see destination for all visitors to Oz.
However, there is another prominent precious stone that appears multiple times in “The Wonderful Wizard of Oz” and is arguably of equal, if not greater, significance.