Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
Rainbow iridescent Caloceras display ammonite
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  • Load image into Gallery viewer, Rainbow iridescent Caloceras display ammonite
  • Load image into Gallery viewer, Rainbow iridescent Caloceras display ammonite
  • Load image into Gallery viewer, Rainbow iridescent Caloceras display ammonite
  • Load image into Gallery viewer, Rainbow iridescent Caloceras display ammonite
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Rainbow iridescent Caloceras display ammonite

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A stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK.

The rock measures 85 mm (3.4 inches) wide and contains a partial ammonite that sits in the original limestone matrix in which is was found that has been shaped and has a cut-flat base to allow it to be displayed freely standing. The ammonite is well preserved and has been prepared out of the rock to reveal the shell, which display some beautiful iridescence with colours that change as the viewing angle changes, with reds, oranges, and green colours dominating.

These fossils are highly sought after and very hard to find. They are preserved in the same way as the famous Canadian "Ammolite" ammonites that are turned into valuable gemstones. The fossil weighs 55 grams. These fossils make great unusual gifts and each one is totally unique.

Around 200 million years old (Hettangian, Early Jurassic), this fossil would make a wonderful addition to any collection.