Natural Germanium Stone Granules Raw Ore for Water Purification

These are natural germanium stone granules crafted from raw germanium ore, mainly used for water purification. They show a natural gray-black color with irregular particle shapes. Made of pure natural mineral raw ore, they contain beneficial trace elements to improve water quality. Suitable for water filters and household water treatment devices, these germanium stone granules provide a safe and natural way to purify daily drinking water.