This is an amazing decorator display fossil as much as it would be an unusual and rare addition to any advanced ammonite collection. In a decade and a half of our overseas travel and work with specimens from Morocco this is the only example we have ever encountered like it. It is an extremely rare Coilopceras sp. ammonite but what's more, it is SOLID NATURALLY-GLOSSY BROWN CALCITE. Not only is it in a perfectly-preserved state, it shows translucent inner anatomy of its oak leaf chamber detail. It seems like the entire inside of the ammonite filled with calcite and then the outer shell dissolved over time to create this once-in-a-lifetime fossil. It is pure joy to handle as attractive as it looks. The intensely glossy finish is NATURAL and has not been coated with any substance. Perfect to accompany any advanced fossil marine life collection as well as a stunning and highly unique interior design fossil of pure natural history!