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Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structureCrystal field theory makes predictions about how a transition metal ion's structure is ... one element—chromium—create the red color of a ruby and green color of an emerald?
Ultimately, Boston Metal hopes to license its green production process to other steel manufacturers. You can watch the molten metal flow from Boston Metal's test plant in the following video.
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