- Apply procedures for identification and diagnosis of the state of the gemological material in a piece of jewelry, considering the degree of conservation (breaks, abrasions and cracks), characteristics (color, hardness, fragility, porosity, sensitivity to heat, ultrasound and reactivity to chemical agents), shapes, cuts and aesthetic properties of the gems. - Prepare technical information on the gemological material set in a piece of jewelry - Apply techniques for selecting gemological material by shades, sizes, sizes and qualities and interpreting technical information - Prepare technical information on the precautions to be taken in the operations of holding gemological material in pieces of jewelry, indicating the convenience of the intervention and the treatments to be applied in the gem setting procedures. - Apply setting preparation techniques to pieces of jewelry, keeping the tools in use and complying with occupational risk prevention (PPE) and environmental protection regulations. - Apply maintenance techniques to tools for setting jewelry pieces, complying with occupational risk prevention (PPE) and environmental protection regulations. - Apply techniques for setting precious stones in pieces of jewelry, using machines, tools, tools and optical devices, complying with regulations on occupational risk prevention and environmental protection. - Apply special setting techniques for precious stones in jewelry pieces, using machines, tools, tools and optical devices, complying with occupational risk prevention and environmental protection regulations.