Filigree is a goldsmith technique that originated in Mixtec culture but developed in Yucatan during the Conquest of Mexico. It was added to the knowledge that the Maya had in handling metals. Filigree uses fine threads of silver and gold to create different organic patterns that are fused together to create a single piece. Horn carving was introduced in the Viceroyalty in Mexico and has been perfected over time by the Maya. Today it is a globally recognized technique, unique to Yucatan, that uses only recovered material.