Which two gemstones are varieties of the same mineral?

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Source:

  • Choice "A": Amethyst and Moonstone % of users selected this choice.
  • Choice "B": Garnet and Peridot % of users selected this choice.
  • Choice "C": Aquamarine and Opal % of users selected this choice.
  • Choice "D": Sapphire and Ruby % of users selected this choice.
Did you know...
Here's one you can try at home: limes have a higher density than lemons. While they both look similar, a whole lime will sink in water, while lemons will float to the surface.
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