Polished Fossil Coral Cab - Indonesia

This is a polished cab of agatized, fossil coral from Sumatra, Indonesia. The polishing allows the beautiful, fossilized structure of the coral heads to easily be seen.

These corals are approximately 20 million years old and are the remains of ancient reefs thrust up into the mountains by the collisions of tectonic plates. As these corals fossilized the original organic material was replaced by silica, iron, manganese and other minerals