ROCKing around the Christmas tree

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Across
  1. 3. Can take over 50 million years to form
  2. 5. a metamorphic stone that is almost completely composed of mineral quartz
  3. 7. have bands
  4. 8. fire-born
  5. 10. the color of statue of liberty
  6. 12. A dark colored volcanic rock
  7. 14. Forms the worlds tallest cliffs
  8. 16. transparent and used for jewlery
  9. 19. worth 5 cents
  10. 20. A light colored volcanic rock
  11. 21. fire in greek
  12. 23. used for pottery
  13. 25. is good for making sharp tools
Down
  1. 1. formed from pre existing rocks
  2. 2. very resistant to heat
  3. 4. A protective gemstone
  4. 6. can be recrystallized back into granite
  5. 9. looks like a grey sponge
  6. 11. considered as the finest grained metomorphic rock
  7. 13. used for building and paving materials
  8. 15. used mostly for white counter tops
  9. 17. a powerful healing stone
  10. 18. can find fossils in them
  11. 22. The Statue of liberty
  12. 24. yellow and doesn't rust