The colors of rubies and emeralds are so striking that they define shades of red and green — ruby red and emerald green. But have you ever wondered how they get those colors? One feature of ...

(THE CONVERSATION) The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green. But have you ever wondered how they get those colors?

‘These Gemfields rubies really spoke to me with their deep red and alluring sparkle. They reminded me of historic royal treasures, love and passion,’ Tomlinson adds. ‘I have a strong connection to the ...

Rubies and emeralds have the colors they do because, like many substances, they absorb some colors of light. Most visible light, like sunlight, is composed of all the colors of the rainbow ...

Daniel Freedman, University of Wisconsin-Stout (THE CONVERSATION) The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green.