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  1. Puerto Rico - USGS State Mosaic
  2. Blue II
  3. North Carolina - USGS State Mosaic
  4. Petrified Wood close-up
  5. San Luis, Argentina - USGS Earth as Art
  6. Purple I
  7. Close-up of feldspar granite, Sherman Mountains, Albany County, Laramie County, Wyoming
  8. Oregon. Close-up of Owyhee Picture Jasper stone
  9. Blue Chrysocolla Jasper
  10. Mineral Spirit II
  11. Barreal Blanco - USGS Earth as Art
  12. Natural Agate II
  13. Circle Rain
  14. Grey Agate III
  15. Australian Tiger Eye
  16. Scripted Jasper
  17. Rhodochrosite, Argentina
  18. Northern Norway - USGS Earth as Art
  19. Alaska - USGS State Mosaic
  20. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  21. Tweezers holding small purple gem, close-up
  22. The Syrian Desert - USGS Earth as Art
  23. Mineral Spirit IV
  24. Glacial sand deposit
  25. Tiger Iron I
  26. Geode Abstract III
  27. Purple II
  28. Grey Agate I
  29. Ocean Jasper from Madagascar
  30. Dinosaur Petrified Bone
  31. Meandering Mississippi - USGS Earth as Art
  32. Small diamonds in row
  33. Alabama - USGS State Mosaic
  34. Florida Everglades - USGS Earth as Art
  35. Aqua Mineral
  36. Cerulean Blue Agate I
  37. Close Ups Of Fortification On Crazy Lace Agate
  38. Silver Lace Onyx
  39. Gold core sample
  40. Amethyst crystals
  41. Desert Patterns - USGS Earth as Art
  42. Bismuth crystal
  43. Nebraska - USGS State Mosaic
  44. Washington - USGS State Mosaic
  45. Marble
  46. Stratified rock at Agio Pavlos, island of Crete, Greece, Mediterranean
  47. Roof of the World - USGS Earth as Art
  48. Marble