This gemstone is a 14mm trillion and weighs 7.73 cts. This stone is fabulously clean and a nice, minty green. Quartz is the same natural material that makes up Amethyst or Citrine. In this case, pale stones are irradiated, and turn a pale green. The color should remain stable.
This could be kept as part of a gem collection, or mounted into any piece of jewelry you desire.