need simple device detects gold 1-2 meters depth

[abdlam]

hi friends;
i need small and simple curcuit in small antena detects the gold underground 1-2 meters but i do not now to biuld it and do not know the gold frequincy that work on.
i hap
i hope i find it here but not as lrl
i wish mr steban help me in this,
most regards