You may check the purity of gold at home using a few different ways. The "acid test," which uses gold testing kits with different acid solutions for different gold purities, is one typical procedure. You can also compare the density of the gold to a known value. A magnet can also be used to see if the gold is attracted to it, as pure gold is not magnetic. However, for precise and dependable results, it is best to get your gold tested by a professional jeweller or a specialised testing facility.