Stunning big rainbow iridescent Caloceras display ammonite fossil (78mm) crinoid The two pieces of rock

The two pieces of rock combined weigh 4

which is turned into valuable gemstones due to the stunning iridescence

94 inches) across and is very well preserved with great detail in the ribbing and a perfect centre on one side

These pyrite ammonites have long been used to create natural jewellery and look amazing in the flesh

The fossil weighs 402 grams and has a cut flat base to allow it to stand freely for display

Stunning big rainbow iridescent Caloceras display ammonite fossil (78mm) crinoid The two pieces of rockA stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 96 mm (3. 75 inches) across and contains an ammonite that measures 78 mm (3. 1 inches), which is large for this species. The ammonite sits in the original limestone matrix in which it was found that has been shaped and has a cut flat base allowing it to be displayed freely standing by itself. The ammonite is very well