In Peru, there are two types of jewelry practice (industrial and artisanal) the second mentioned has a greater participation of people in this context the contribution is for the development of artisanal jewelry (handmade) carrying out a variety of operations with a very high incidence in the manual elaboration to obtain the product (jewel) for sale in the national market. Within the processing: initial step is with casting, in this area the analysis and follow-up was carried out to obtain the optimal and adequate alloy, in this procedure the phenomenon of the oxidation of the material (alloy) occurs, whose manifestation is the affirmation in the superficial part of the visible material, due to the lack of the inert system (zone without oxygen) necessary in it, to reduce the event, the lack of oxygen containment, does not contribute to the good surface presentation after casting, ultimat...