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  1. Purple Jasper
  2. New Mexico - USGS State Mosaic
  3. Aster Agate I
  4. Montana - USGS State Mosaic
  5. Cadmium Orange Agate II
  6. Argento marble
  7. Dinosaur Petrified Bone
  8. Florida - USGS State Mosaic
  9. Dragon Lake - USGS Earth as Art
  10. Quartz crystals
  11. Cut agates
  12. Photography of agate, Stone material, Close Up
  13. Close-up of green crystal
  14. Agate 10
  15. Parana River Delta - USGS Earth as Art
  16. Mineralogie I
  17. Caribbean Luxury - USGS Earth as Art
  18. Indigo Agate II
  19. Tennessee - USGS State Mosaic
  20. Close-up of Condor Agate stone
  21. Opal gemstones
  22. Desert Patterns - USGS Earth as Art
  23. Puerto Rico - USGS State Mosaic
  24. Outback Abstract
  25. Pattern In Wet Stone
  26. The unique looking Fire Wave at dusk, taken at the Valley of Fire, near Las Vegas.
  27. Quartz Top II
  28. Petrified Wood close-up
  29. Iron pyrites
  30. Mineral Spirit II
  31. Impact - USGS Earth as Art
  32. Close-Up Of Fortification Laguna Agate
  33. California Jasper
  34. Jewels
  35. Cerulean Blue Agate I
  36. Malachite
  37. Gold Leaf Agate
  38. Mineralogie III
  39. Silver Lace Onyx
  40. Plenty Of Blue Agates
  41. Rugged Terrain - USGS Earth as Art
  42. Piute jasper
  43. Roof of the World - USGS Earth as Art
  44. Marble
  45. Michigan - USGS State Mosaic
  46. Jasper Agate Mixed slab
  47. Volcanoes - USGS Earth as Art
  48. Geode Abstract III