Cleoniceras Ammonite Fossil Value Guide

The Cleoniceras Ammonite Fossil is a prized Cretaceous-era specimen from Madagascar, celebrated for its intricate suture patterns and internal mineralization. These extinct cephalopods are highly collectible due to the millions of years of pressure that transformed their internal chambers into breathtaking calcite crystals and earthy-toned stone.

What affects the value of Cleoniceras Ammonite Fossil?

• The clarity and size of the internal calcite crystal formations within the chambers.
• Overall diameter and physical scale, with larger specimens commanding prices in the $425-$465 range.
• The quality of the professional polish and the visibility of the complex suture lines.
• The presence of rare 'fire' or ammolite-like iridescence on the fossilized shell surface.

How to Identify Cleoniceras Ammonite Fossil?

• Look for the distinct, leaf-like 'phyllodontic' suture patterns visible on the polished exterior shell.
• Verify the presence of internal chambers often filled with translucent yellow or amber-colored calcite crystals.
• Check for the characteristic opalescent or pearly sheen often found on the outer layer of authentic Madagascar specimens.
• Confirm the heavy weight and cold-to-the-touch feel typical of genuine mineralized fossil matrix.

History of Cleoniceras Ammonite Fossil

Ammonites are extinct cephalopods that lived in the oceans between 240 and 65 million years ago. They are closely related to living octopuses and squids. These particular specimens from Madagascar are prized for their high degree of calcification, which often turns the chambers into beautiful calcite crystals or earthy-toned stone over millions of years of pressure.