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