METAL DETECTING TUTORIAL: Discrimination.

Items often settle on the beach sands according to weight.
Especially finding Gold in the wet sand on the low tides. In this situation Metal Detector Discrimination is useless. If you use it to find Coins or Silver items, then Gold items will be missed. Because Metals like Copper, and Silver are much more
conductive than Gold, and will give a bigger signal. The heavier Gold items usually only are within detectable range after the action of the waves move the sands around, or soon after they are initially lost. Copper and Brass items corrode in the salt water and create an even bigger signal (Halo effect) So if you find a spot with a high percentage of coins then any Gold items lost in the area are likely close by. Good quality Gold (18ct and up) are nearly always found in great condition,- even if it has been lost for hundreds of years. The age of the Coins can tell you how long items have been lost in the area, and can give you an idea how many Gold items there is likely to be. If you come across lots of bottle tops and Pull tabs then it is likely that you are in the wrong spot,- but not always. Between the flags Gold items move and travel roughly 100 cm deeper on every tide change, but most of the lighter items remain close to the surface. Unless there was a recent storm,- in this case you have a few hours to find them within Metal Detector range. I know what a Gold Ring sounds like!. Gold Rings like,- Pull tabs give off a closed loop signal which is even stronger that the halo effect that coins make. Some concentrations of targets or pockets you need to remove the junk items to find Gold Rings underneath, or from the area itself. If you find old coins in the mix then you will most likely find A Gold Ring or 2.The pulse induction Metal Detector was developed to easily penetrate Beach salt and soil mineralisation on the Goldfields. The problem is that it is just as sensitive to iron and steel as it to Gold. See METAL DETECTING TUTORIAL 2: Seek and you shall find.