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  1. Vermont - USGS State Mosaic
  2. Yellowstone
  3. mineral
  4. Bismuth crystal
  5. Waziristan Hills - USGS Earth as Art
  6. Marble
  7. Coloured coastal rock
  8. Oklahoma - USGS State Mosaic
  9. Banded Iron I
  10. Blue Gemstones Found Near Jodhpur
  11. Gold core sample
  12. Sanduba marble
  13. Ammonite
  14. Marble
  15. Lava Cliff
  16. Coahuila, Mexico - USGS Earth as Art
  17. Banded sandstone rock
  18. North Carolina - USGS State Mosaic
  19. Marble
  20. Sandstone Formations in the Fiery Furnace, Arches National Park, Utah
  21. Petrified Wood close-up
  22. Excavation at Galeria
  23. K/T boundary layer
  24. California - USGS State Mosaic
  25. Washington - USGS State Mosaic
  26. Marble
  27. Ocean Jasper from Madagascar
  28. Byrd Glacier - USGS Earth as Art
  29. Flourite
  30. Lake Disappointment - USGS Earth as Art
  31. Ocean Jasper from Madagascar
  32. Volcanic ash layers in rock
  33. Malachite
  34. Rock wall from road cut, Icefields Parkway, Alberta, Canada
  35. Coloured coastal rock
  36. State Posters - Arkansas State Mineral: Quartz
  37. Delaware - USGS State Mosaic
  38. Earth Pyramids, Italy
  39. Marble
  40. Marble
  41. Closeup of granite
  42. Alluvial Fan - USGS Earth as Art
  43. Meighen Island - USGS Earth as Art
  44. Sapphire
  45. Sandstone Formations On The Banks Of The Missouri
  46. Tourmaline
  47. State Posters - North Carolina State Gemstone: Emerald
  48. Edrengiyn Nuruu - USGS Earth as Art