Garnet sand beach on Goodenough Island (IMAGE) Syracuse University Caption Garnet sand beach on Goodenough Island, Milne Bay Province, Papua New Guinea. These garnets originate from rocks such as the gneiss (pictured above), and are then concentrated as a placer deposit on the beach. Credit Photo credit: Professor Paul Fitzgerald 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.