Solve this!

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Across
  1. 2. a volcano does this
  2. 6. a lizard-looking animal that changes colour
  3. 9. a fake limb for people who doesn't have arms or legs
  4. 11. keep something for future use
  5. 12. you use this word to describe a sparkly diamond
Down
  1. 1. a very strong dome made out of many triangles
  2. 3. a city with sparkling water fountains
  3. 4. when you get something (money) for doing some work
  4. 5. release
  5. 7. give (money) to pay for something
  6. 8. a very old man named Sir Thomas Moore walked 100 laps for this cause
  7. 10. the place with a festival where people run with bulls