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  1. Agate Studies I
  2. Sage Agate A
  3. Fortifications Crazy Lace Agate
  4. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  5. Close-Up Royal Aztec Lace Agate
  6. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper stone
  7. Sage Agate B
  8. Cherry Creek Jasper
  9. Deschutes Jasper, Oregon
  10. Condor Agate With Fortifcations
  11. Earth Agate F
  12. Zig Zag Pattern Crazy Lace Agate
  13. Agate Studies II
  14. Laguna Agate
  15. Agate Studies III
  16. Rhodochrosite Mineral From China's Wuton Mine
  17. Bismuth crystal
  18. Cut and polished diamond
  19. Colorful Petrified Wood
  20. Modern Geode I
  21. Plum Agate B
  22. Grey Agate E
  23. Grey Agate B
  24. Close Ups Of Fortification On Crazy Lace Agate
  25. Fortifications Agua Nueva Agate
  26. Stacked Agate II
  27. Amethyst crystals
  28. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  29. Bolivia, Potosi, Amethyst in a Bolivian museum
  30. Indigo Agate C
  31. Stacked Agate I
  32. Glutamic acid crystals, light micrograph
  33. Blue Watercolor Agate Rectangle
  34. Malachite
  35. Gem Stones I
  36. Chrysocolla
  37. Gem Stones III
  38. Shattuckite Jasper
  39. Ocean Jasper
  40. Purple Watercolor Agate II
  41. Rainbow Ridge Picture Agate
  42. Agate Studies IV
  43. Iron pyrites
  44. Purple Watercolor Agate I
  45. Indigo Agate D
  46. Moss Agate
  47. Watercolor Agate I
  48. Quartz crystals