AGS Precious Gemstones

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Across
  1. 5. This modern gemstone, found in 1831, changes color depending on the type of light that hits it
  2. 7. A form of Onyx that was popular with the ancient Greeks and Romans
  3. 8. Part of a family of minerals called feldspar, this gemstone comes in a variety of colors
  4. 10. It is known for displaying several or more colors in the same gemstone formed in many combinations
  5. 12. It is known as the "healing quartz"
  6. 13. A gemstone that symbolizes rebirth
  7. 14. A formation of hardened non-crystalline silica gel gives this gemstone its many colors
  8. 15. For many years, the colorless variety of this gemstone was used to imitate diamonds
  9. 17. A gemstone that symbolized royalty during the Middle Ages
  10. 19. The only gems that come from living sea creatures
  11. 20. In Hawaii, this gemstone is said to come from the tears of Pele, the goddess of fire and volcanoes
Down
  1. 1. Originating in the 13th century, it is one of the oldest known gemstones
  2. 2. One of the best known gemstones, most famous for their usage in engagement rings
  3. 3. It is harder than any natural gemstone other than the diamond
  4. 4. Vivid red spots appear on this gemstone due to its iron oxide content
  5. 6. A gemstone that was recently discovered in 1967
  6. 9. A gemstone that somewhat resembles a pomegranate seed
  7. 11. A gemstone that is rumored to help protect sailors on their voyages
  8. 16. This gemstone is a variety of the gem species corundum
  9. 18. This gemstone is often confused with citrine and smoky quartz