Dowsing is a wonderfully counterintuitive profession. The trick is threefold: first, experienced dowsers become familiar with various terrains, particularly ones that are natively ore-rich. Secondly, dowsers are frequently hired to corroborate the authenticity of veins found with modern prospecting, which is entirely to give the prospecting company or other sensitive decision-maker an avenue to shift blame if the veins turn unviable. Though, because the dowser is trained upon these rich ores to begin with, the side effect exists of building their confidence, which is valuble. Thirdly, the posture that so suggests veins--holding the rod with both hands and intensely watching the tip--requires the user to be staring at rocks on the ground quite often. The rod behaves more as a conduit for intuition, its lever distance amplifying the suspicions of the hands. The metallic characters of gold and silver are immaterial--they are a confidence trick upon the self. One could demonstrate by transmuting a a standard silver dowsing rod to a standard golden dowsing rod, or vice versa as needed, instead of procuring one of each--but I don't advise it be done, as it would ruin the confidence trick, and one would ruin the utility of both rods, so as to have zero working dowsing implements instead of one.

Anyway, everyone has explained how 19c works by now, so I'll just point out the trick with putting the leftover lead pair at the end of the Silver Rod so that I can regrab it. Stacking 7 inputs into a rod at max speed doesn't let you regrab.