Precious metals like silver and gold are very soft.
Silver is a tricky material to mark as it oxidizes and tarnishes easily.
Gold can be very easy to mark, requiring little power to get a good, contrasting anneal.
ZGG laser marking machine is capable of marking on silver and gold and the ideal system for your application depends on your marking requirements.
Because of the value of these substrates, engraving and etching are not common.
Annealing allows the surface oxidation to create contrast, removing only a negligible amount of material.
