Calcified Ammonite Halve From Madagascar (317.6 grams)

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internally replaced by calcite  with small areas showing its original mother of pearl iridescent outer shell. Its a complete ammonite sliced and polished to expose the internal cavities now lined with calcite micro crystals.

317.6 grams, 4.25 x 1 x 5 inches