1 3/4" Iridescent Fossil Ammonite, Cleoniceras, 110 Million yrs. oldHeartland Artifact Auctions4.7(867)$10(1 bid)4 days Left
2 5/8" Highly Polished Fossil Ammonite, Paleozoic to Mesozoic Era-Stunning Specimen with InclusionsHeartland Artifact Auctions4.7(867)$104 days Left
Outstanding Iridescent Ammonite Fossil 110 Million Years Old Cleoniceras AmmoniteHeartland Artifact Auctions4.7(867)$10(1 bid)Feb 15, 2026
Big Whole Sutured and Polished AMMONITE Fossil from MadagascarWestern Sportsman LLC4.5(79)$80(17 bids)
XXL AMMONITE Fossil Specimen from Morocco, Weight: 29 lbsWestern Sportsman LLC4.5(79)$10(1 bid)11 hrs Left
SoldOpalized Ammonite fossilAmazing Opalized Ammonite rainbow color reflections. From Madagascar. size 3" No Reserve Shipping This item ships from Protland, OR.See Sold Price
SoldOpalized ammonite fossil polishedOpalized rainbow sheen ammonite with high gloss - good condition for ancient fossil -about 250 million years old - 2 x 1 1/2 "See Sold Price
SoldStunning Opalized Ammonite Fossils w/ Pyrite**First Time At Auction** Ancient seas, Russia, Jurassic period, 201.3 to 145 Million years ago. A stunning collection of 8 ammonite fossils from the Quenstedtoceras genus that have been grouped to foSee Sold Price
SoldASSORTED OPALIZED AMMONITE FOSSILS - LOT OF 19ASSORTED OPALIZED AMMONITE FOSSILS - LOT OF 19 Assorted polished opalized ammonite fossils - lot of 19. Condition: Very fine. Mineral specimensSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenOpalized Ammonite Fossil Cretaceous MadagascarSee Sold Price
SoldRare Ammonite Fossil Table SculptureOpalized ammonite fossil table sculpture, ammonites are a group of extinct marine mollusc animals of the class cephalopods, that are often found as fossils in marine rocks dating from the Devonian PerSee Sold Price
SoldFossil opalized ammonite 100 million years oldFossil Opalized ammonite Madagascar 100 million years oldSee Sold Price
SoldAmmonite opalized fossil specimenAmmonite in matrix as found- opalized chocolate tone 250-500 million years old -about 1 1/2 x 1 inch large specimen in matrix- other ammonites in same matrix as well.See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil "opalized" ammonite. Madagascar Creataceous, 100 million years oldSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite "Opalized" MadagascarSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Opalized Ammonites Cretaceous ~ Madagascar Cleonoceras 1lb 12ozSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite Opalized Madagascar 5"See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite Opalized Madagascar 5.25"See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite "Opalized" MadagascarSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite Opalized 4.92"See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite "Opalized" MadagascarSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite "Opalized" Madagascar 3"See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Opalized Ammonite Cretaceous ~ Madagascar 3.5"See Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, Specimen, OpalizedFossil Ammonite Opalized MadagascarSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenOpalized Fossil Ammonite MadagascarSee Sold Price
SoldAmmonite, Fossil, Rock, Natural, Collectible, SpecimenFossil Ammonite "Opalized" Madagascar 2.5"See Sold Price
