How Do Things Work on Instagram: "Gold can be extracted from river sand mainly through density-based separation. First, sand is collected from riverbeds where gold deposits are likely. The material is then washed in a pan, sluice box, or similar setup. When water is added and the mixture is shaken or allowed to flow, the lighter sand and silt are carried away, while gold particles—which are heavier—stay at the bottom. Sometimes magnets are used to remove magnetic minerals like iron sand, leaving