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

Double Rainbow 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 matrix measures 70 mm (2.75 inches) across and contains two tiny ammonites, one on either side of the rock. The shells sit in the original limestone matrix in which they were found that has been left natural rather than shaped. The ammonites are very well preserved and have been prepared out of the rock to reveal the shells, which display some stunning iridescence with most of the colours of the rainbow appearing as the viewing angle changes on one and a stunning green on the other.

These fossils are highly sought after and very hard to find, especially complete like this. They are preserved in the same way as the famous Canadian "Ammolite" ammonites that are turned into valuable gemstones. The fossil weighs 30 grams.

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