These earrings feature large cabochons of ancient fossilized coral. Found in the coastal mountains of Sumatra and Java, this natural stone is formed from ancient corals from the miocene age (apx. 20 million years ago). Tops of chalcedony and iolite highlight the organic blue-grey flowery pattern of the coral.Set in 18k yellow gold with secure post and clip backing. One-of-a-kind.