290ct Cut Opalized Ammonite Fossil Half

Beautiful specimen approx 2"

Beautiful specimen approx 2"

Excellent natural specimen; tens of millions of years old

Excellent natural specimen; tens of millions of years old

Excellent natural specimen; tens of millions of years old

Excellent natural specimen; tens of millions of years old

Jurassic Period, 199-145 million years B.P. A pair of cut and polished fossil ammonite halves, each displaying the gas chambers; possibly Cleoniceras sp. 172 grams total, 95-97 mm (3 3/4 - 3 7/8 in.).

Excellent large 250m+ year old specimen

Excellent large 250m+ year old specimen

Cretaceous Period, 145-65 million years B.P. A cut and polished Phylloceras velledae ammonite in two halves, displaying the distinctive pattern of the cross-section chambers; held in a white card coll

Cretaceous Period, 145-65 million years B.P. A cut and polished Phylloceras velledae ammonite in two halves with iridescent surfaces; held in a white card collector's tray. 231-254 grams, 10.7 cm widt

Jurassic Period, 172-168 million years B.P. A cut and polished ammonite in two halves, distinctive cross section chambers filled with crystals, some iridescence to outer surfaces. 275 grams total, 10.

Cretaceous Period, Albian Stage, 113-100 million years BP. A cut and polished Cleoniceras sp. ammonite in two halves, displaying the distinctive pattern of the cross-section chambers. 274 grams total,

Cretaceous Period, 145-65 million years B.P. A matching pair of cut and polished fossil Cleoniceras sp. ammonite halves, displaying the distinctive pattern of the chambers. 765 grams total, 15.1 cm ea

Cretaceous Period, 200-65 million years BP. Group comprising: a small ammonite, cut and polished in two halves, with two small fossil fish specimens, in matrix. 618 grams total, 3.2-14.7cm (1 1/4 - 5

6 cut and polished ammonite halves to visualize chambers, on cards, 1.5 x 1.25 x 0.25" to 1.25 x 1.0 x 0.25"; 1 entire with label identifying as Hoploscaphite from Fox Hills formation, South Dakota, o

Devonian Period, 417-354 million years B.P. A group of three cut and polished goniatite ammonite halves, including possible Orthoceras sp. specimen in one. 437 grams total, 80-93 mm (3 1/8 - 3 5/8 in.

POLISHED AMMONITE FOSSIL HALF - (F226) Height: 4 in. by Width: 5 in. by Depth: 1

Amazing Opalized Ammonite rainbow color reflections. From Madagascar. size 3" No Reserve Shipping This item ships from Protland, OR.

Opalized rainbow sheen ammonite with high gloss - good condition for ancient fossil -about 250 million years old - 2 x 1 1/2 "

**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 fo

Dimensions: L 8.75" x W 7.5" x D 1" Condition: Showing light wear consistent with age and display including a few nicks to edges, natural surface imperfections and hairlines.

ASSORTED OPALIZED AMMONITE FOSSILS - LOT OF 19 Assorted polished opalized ammonite fossils - lot of 19. Condition: Very fine. Mineral specimens

Pair of 2 5/8" Matching - Polished Ammonite Fossil Halfs