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  1. Molecular model of quartz
  2. Mineralogie I
  3. Siberian Ribbons - USGS Earth as Art
  4. Blue Watercolor Agate Square
  5. Stone Sliver II
  6. Small diamonds in row
  7. Rhodochrosite, Argentina
  8. Agate Sample
  9. K/T boundary layer
  10. Australian Tiger Eye
  11. Close-up of Condor Agate stone
  12. Minnesota - USGS State Mosaic
  13. Native copper
  14. Natural Agate I
  15. Edrengiyn Nuruu - USGS Earth as Art
  16. Mineralogie III
  17. Alluvial Fan - USGS Earth as Art
  18. Ocean Jasper from Madagascar
  19. Okavango Delta - USGS Earth as Art
  20. Island Rebound - USGS Earth as Art
  21. Marble
  22. Geode Abstract IV
  23. Colorado - USGS State Mosaic
  24. Stone surface
  25. Iron pyrites
  26. Meighen Island - USGS Earth as Art
  27. Petrified Wood close-up
  28. Rock Formations In Mono Lake
  29. Wyoming - USGS State Mosaic
  30. Nebraska - USGS State Mosaic
  31. Byrd Glacier - USGS Earth as Art
  32. The Dardzha Monster - USGS Earth as Art
  33. Roof of the World - USGS Earth as Art
  34. Alabama - USGS State Mosaic
  35. Mt. Etna - USGS Earth as Art
  36. Pietersite from Namibia
  37. Glacial sand deposit
  38. Rocky Mountains - USGS Earth as Art
  39. Ganges River Delta - USGS Earth as Art
  40. Tiger Iron II
  41. Amethyst crystals
  42. State Posters - Colorado State Mineral: Rhodochrosite
  43. San Luis, Argentina - USGS Earth as Art
  44. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  45. Gold core sample
  46. Tweezers holding small purple gem, close-up
  47. Oregon - USGS State Mosaic
  48. Peridot