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  1. Pebbles I
  2. Diamond
  3. Cobalt Blue Agate II
  4. Autumn Agate I
  5. Gold nugget held in tweezers
  6. The Optimist - USGS Earth as Art
  7. Chewy Minerals
  8. Sierra de Velasco - USGS Earth as Art
  9. Plum Agate I
  10. Purple Watercolor Agate I
  11. Lapis Lazuli Agate I
  12. Patterns created by sea erosion on rocks, Northumberland England, UK
  13. Desert Agate II
  14. Plenty Of Blue Agates
  15. Von Karman Vortices - USGS Earth as Art
  16. Indigo Agate D
  17. Algerian Sahara - USGS Earth as Art
  18. Florida - USGS State Mosaic
  19. Quartz Top II
  20. Moss Agate
  21. Lapis Lazuli Agate II
  22. Cadmium Orange Agate I
  23. Quartzsite
  24. Kentucky - USGS State Mosaic
  25. Lena Delta - USGS Earth as Art
  26. Wingate Pass Agate, Ca
  27. Bogda Mountains - USGS Earth as Art
  28. Blood Orange Agate II
  29. Akpatok Island - USGS Earth as Art
  30. Mineral Spirit I
  31. Watercolor Agate I
  32. Banded Iron II
  33. Virginia - USGS State Mosaic
  34. Photography of agate, Stone material, Close Up
  35. Cadmium Orange Agate II
  36. Pebbles on a beach
  37. Karman Vortices - USGS Earth as Art
  38. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  39. Quartz crystals
  40. Earth Agate IV
  41. Blue Cliff Chrysocolla
  42. Wisconsin - USGS State Mosaic
  43. Agate 10
  44. Aster Agate II
  45. New Mexico - USGS State Mosaic
  46. Colorado - USGS State Mosaic
  47. Lava and Smoke
  48. Purple Jasper