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