Chalcedony from the Withlacoochee River in Lowndes County

Who knew one of our local rivers was famous for pretty shiny rocks?

Jolyon Ralph and Ida Chau wrote, apparently in 2012, Withlacoochee River Lowndes County, Georgia, USA
List of minerals arranged by Strunz 10th Edition classification
Group 4 – Oxides and Hydroxides Quartz var: Chalcedony 4.DA.05 SiO2