Indonesian Fossil Coral + Agate Cabochons

Natural Indonesian Fossil Coral Cabochons from the TowerCrystals internet collection

Polished Agate Cabochons from Indonesia. Some of them are fossilised, all are agatized. Fossils can be a record of a sudden catastrophic event like a volcano, or simply a shell turned to stone in sedimentary layers of limestone formed by ancient sea beds.