Lapidary Words

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Across
  1. 2. Leo birthstone
  2. 6. Bright green calcite
  3. 7. Banded and fluorescent
  4. 10. From volcanic glass
  5. 11. Gem group in many colors
  6. 12. Organic non-gem
  7. 14. Common, often banded
  8. 15. What lapidarists love
Down
  1. 1. Common inclusion
  2. 3. Best known in blue and smoky
  3. 4. Cat's eye effect
  4. 5. Birthstone that prevents drunkenness
  5. 7. Ancient finds
  6. 8. Opaque silica variety in earthy colors
  7. 9. Often Australian
  8. 13. July corundum