Gems And Minerals

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Across
  1. 2. – Gem formed inside oysters
  2. 4. – Green gemstone often used in carvings
  3. 6. – Red gemstone often used in rings
  4. 9. – Blue-green gemstone
  5. 11. – Red gemstone
  6. 12. – Blue gemstone
Down
  1. 1. – Gemstone with a play of colors
  2. 3. – Purple variety of quartz
  3. 5. – Hardest natural substance, often used in jewelry
  4. 7. – Green gemstone
  5. 8. – Common mineral found in many rocks
  6. 10. – Gemstone that comes in many colors