A metal detector is a device that, thanks to the magnetic field it generates, can attract or repel the metals it finds –depending on their type of magnetism-.
When running into one of these materials and a magnetic effect is produced, the device emits a signal, beeping, and warning of the presence of the metal. When a metal detector finds a diamagnetic metal, it is repelled by it and there is a good chance that what will be found is a gold or silver object.
Those who seek gold and silver need specific equipment. The same is not the case with seekers of objects, such as jewelry, relics, and coins as with those who seek gold and silver, since the correct equipment for this type of search deserves careful study.
The best gold and silver detector varies from case to case. To find the ideal detector, it is necessary to determine what type of objects will be searched for, how much time will be invested in the search, how much experience one has in the field, and if the search is at a professional level or will only be carried out for a sport.
For example, if you are looking for a lot of silver coins and/or gold bars that are buried, then get a Two Box gold and silver detector or a Deep Search detector. Now, if you are a rookie seeker, then think about how often the detector will be used and how much budget you have. Your kit may consist of a quality metal detector, plus a pickaxe, shovel, and bag.
In general terms, gold and silver detectors are of two types. They can be high-frequency circuits known by the letters VLF, which are very sensitive to these precious metals, or they can be low-frequency Pulse Induction circuits. In the case of the former, the VLF circuits, although they are sensitive to gold and silver, are also sensitive to minerals in the ground.
This is unfortunate because minerals are common in areas where there is a chance of getting gold. But there’s good news, gold and silver detectors can be tuned to filter out much of the interference caused by minerals. Secondly, Pulse Induction gold and silver detectors have the advantage of being able to ignore mineral soil characteristics and target gold and silver at extreme depths.