In order to simulate the process of formation of diamond dust in the Arctic (clear sky crystals) and its radiative effects, an analytical model of aerosol equilibrium size spectra and a new parameterization of the homogeneous nucleation rate are incorporated into a 2D nonhydrostatic cloud model. The clouds are modeled using explicit microphysics based on kinetic equations for the droplet and crystal size distribution functions. The model includes ice nucleation via both heterogeneous and homogeneous mechanisms. The model is initialized using data from SHEBA and some arctic haze experiments, and the simulation is compared with the observations. Sensitivity studies are conducted to assess. Sensitivity studies are conducted to investigate the impact of the initial profiles of temperature and humidity on the ice water content, crystal concentration, mean radius, size spectra, mechanisms and rates of nucleation, and supersaturation. The impact of the diamond dust on the water vapor profile and radiative fluxes are investigated. Implications for radiation feedbacks in the Arctic are discussed