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  1. Minnesota - USGS State Mosaic
  2. Plenty Of Blue Agates
  3. Close-up of feldspar granite, Sherman Mountains, Albany County, Laramie County, Wyoming
  4. Richat Structure - USGS Earth as Art
  5. Mineral Spirit VI
  6. Circle Rain
  7. Oregon. Close-up of Graveyard Point Plume Agate stone
  8. Cadmium Orange Agate II
  9. Crystal
  10. Wisconsin - USGS State Mosaic
  11. Sierra de Velasco - USGS Earth as Art
  12. The Optimist - USGS Earth as Art
  13. Grey Agate III
  14. Close-up of stones
  15. Pattern In Wet Stone
  16. Always and Forever - Sentiment
  17. Close-up of green crystal
  18. Gemstones
  19. Stone surface
  20. Outback Abstract
  21. Blue II
  22. Geo I
  23. Marble
  24. Modern Geode IV
  25. Stratified rock at Agio Pavlos, island of Crete, Greece, Mediterranean
  26. Banded Iron II
  27. Cerulean Blue Agate I
  28. Caribbean Luxury - USGS Earth as Art
  29. Iron pyrites
  30. Mineral Rings Geode
  31. Malachite
  32. Florida - USGS State Mosaic
  33. Blue agate geode
  34. Purple Jasper
  35. Christmas Jasper
  36. Tennessee - USGS State Mosaic
  37. Montana - USGS State Mosaic
  38. Agate 10
  39. Petrified Wood close-up
  40. The unique looking Fire Wave at dusk, taken at the Valley of Fire, near Las Vegas.
  41. Marble
  42. Volcanoes - USGS Earth as Art
  43. Dragon Lake - USGS Earth as Art
  44. Desert Patterns - USGS Earth as Art
  45. Sea salt, SEM
  46. Dinosaur Petrified Bone
  47. Okavango Delta - USGS Earth as Art
  48. Tiger Iron II