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