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Where can I sell my loose gemstones, birthstones and crystals?
As with other colored gemstones, color is one of the most important factors determining the price of your ruby. The most valuable of rubies tend to be an intense deep red in color, and may even be ...
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Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...