This document summarizes several beaches around the world with uniquely colored sands: - Green Sand Beach in Hawaii gets its green color from olivine crystals in the surrounding land. - Red Sand Beach in Maui, Hawaii is partially isolated and has red-black sand due to high iron content. - Harbour Island in the Bahamas has pink beaches from red corals in the water. - Punalu'u Beach in Hawaii is also known as the Black Sand Beach, with black sand created by lava flowing into the ocean.