CuS is an important p-type semiconductor material with many interesting properties and potential applications. CuS (covellite) has been synthesized by solvothermal, hydrothermal, microwave irradiation, sol-gel, electrodeposition, solid state reaction, chemical bath decomposition, mechanochemical, sonochemical etc methods. We have taken an initial interest to synthesize CuS with Zn as dopant in different concentrations using co-precipitation technique at room temperature. The synthesized sample was structurally, chemically, optically and electrically characterized. Structural analysis shows that the particles synthesized were nanocrystals. Chemical studies show the high purity of the sample prepared. Optical studies show that these nanocrystals could be used for coatings as sun glasses and poultry roofs. Measurements of dielectric parameters confirm this nanocrystals could be used as an electrical material.