Subtly green iridescent Caloceras display ammonite crinoid It is preserved in limestone

It is preserved in limestone with no pyrite and has been backed with a rock-coloured plaster to make it strong and stable

The piece of limestone matrix measures 90 mm (3

These calcite ammonites make great unique gifts for the nature lover in your life

which display some beautiful pearlescence with different colours appearing as the angle the fossil is viewed from changes

The ammonite shell is well preserved with great detail in the ribbing and suture lines in the centre of the matrix which represents the outer whorl of the shell

Subtly green iridescent Caloceras display ammonite crinoid It is preserved in limestoneA stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 123 mm (4. 95 inches) across and contains an ammonite that measures 81 mm (3. 2 inches) across, which is large for this species. The shell sits in the original limestone matrix in which it was found that has been shaped and has a cut flat base to allow it to stand freely by itself for display. The ammonite is very well