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Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
But how can one element – chromium – create the red color of a ruby and green color of an emerald ... which will be in the ...
In ‘Wicked,’ they’re silver. But at Academy Museum color show, the ruby-red shoes take center stage
In the hit movie “Wicked,” those famous magical shoes are silver. But if you want to see them in all their ruby-red glory ...