The existence of precious metals in Mexico gave rise to a strong goldsmith and jewelery tradition that dates back to pre-Hispanic times. One of the richest artistic legacies comes from the indigenous cultures of Oaxaca, in which the goldsmith tradition that distinguished the Mixtecos from the end of the 9th century to the beginning of the 16th century when the Conquest occurred is outstanding. The casting technique "of the lost wax", which had such an impact in Europe, began its work by grinding the coal, which was mixed with a little clay, until it formed a solid and compact mass; with it they made thin discs that served as a mold and were left to dry; when the coal was dry and hard it was engraved with all the details that the jewel would carry. It is possible that they were used, in addition to metal instruments, some very fine and resistant spines like those of the maguey. The mold was filled with beeswax, proceeding then to pour the metal in its liquid state, which caused the wax to drain through a hole and in its place appeared the gleaming jewel. When the Spaniards arrived at the Mexican beaches they received beautiful presents sent by Moctezuma and were amazed at the great wealth that was offered to them, as well as the skill of the goldsmiths who made such works of art, for which their interest to explore the New World in order to find the rich mineral deposits. With the discovery of silver mines in the mid-sixteenth century in the states of Hidalgo, Zacatecas and Guanajuato, as mentioned, there was a strong boost to mining in New Spain, which in turn marked a severe setback in the industry of jewelry and goldsmithing, since the Spaniards used the metals for their crude export or as an exchange pattern with the issuance of coins. Even worse was the fact that the gold and silver that the Indians had were cast in ingots, which prevented the preservation of testimonies of Mesoamerican jewelry, the only exception being that of the pieces rescued in Tomb 7 of Monte Albán, in Oaxaca. As it was explained, a work known in Mesoamerica was that of lost wax, but soon they met and worked with techniques such as filigree, in which metal wires are used arranged in different spaces marked by a frame. Nowadays, in addition to the traditional techniques such as the filigree for the elaboration of jewelery, as well as the traditional forms and the copies of pre-Hispanic designs or pieces inspired by them, both for jewelery and for goldsmithing, a new one is recreated and revitalized school with pieces of "married" metals (copper, brass and silver), in matte or glossy finish, also using beautiful combinations with semiprecious stones like amethyst, turquoise, obsidian, lapis lazuli, opal and malachite. Also, the abalone shell (nacre shell) and fine woods such as mahogany, ebony and rosewood are used, combined with silver, they create authentic mosaics in ornamental pieces or sumptuary use.