Rare 450 million-year-old geode discovered in Australia set for auction

Terry Hearl, an Australian gem hunter, discovered a rare 861-gram geode in a remote creek he has kept secret for over 30 years. The geode, estimated to be 450 million years old, will be auctioned with a minimum price of $1,000. Hearl found the geode at a location he calls Secret Creek, known for its unique crystal formations. He has kept the exact site private to prevent over-exploitation, as he has seen damage caused by others in the past. In recent years, Hearl has turned his hobby into a business, selling rare crystals to collectors worldwide. He believes the quality of his finds at Secret Creek is gaining international recognition.