Polished Ammonite Split Pair - 3.556" Cleoniceras showcasejewelry2025saleall the Triceratops’ teeth were nestled

the Triceratops’ teeth were nestled inside one another

~ Henry van Dyke

This necklace contains a glass-topped bead composed of fine-grained dust extracted from the Allende meteorite

70" polished Cleoniceras fossil from Madagascar

This specimen is a 11

Polished Ammonite Split Pair - 3.556" Cleoniceras showcasejewelry2025saleall the Triceratops’ teeth were nestledAmmonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 556" polished Cleoniceras fossil from Madagascar. The fossil has been split into a paired set to showcase the beautiful internal chambers of the shell. These internal chambers are called septa and the ammonite could fill them with air in order to float through the ocean like a balloon. After millions of years, they are now