Zircon Crystals (IMAGE) Australian National University Caption Zircon crystals as old as 4.4 billion years were found in sandstone at Jack Hills of Western Australia. Credit Stuart Hay, ANU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.