Colloidal particles of calcium fluoride (fluorite) have been synthesized and characterized. The synthesis was carried out at different concentrations and ratios of calcium chloride and ammonium fluoride. The dependence of the size and rate of growth of particles on the initial concentrations and molar ratios of reactants were obtained. The purity of the sample and the specific surface area of synthesized particles were determined. The isoelectric point and electrokinetic potential of fluorite particles in the suspension with stoichiometric ratio of reactants and in suspensions with excess of calcium and fluoride ions is determined by electrophoresis. The kinetics of dissolution at two pH values for synthesized and acquired fluorite particles have been investigated. It has been shown that the largest fluorite particles are formed in excess of fluoride ions during the synthesis, while the fastest growth is measured for synthesis in the suspension with stoichiometric ratio of reactants. The rate of dissolution of fluorite depends on the pH. The rate coefficients of dissolution of fluorite particles and the order of the dissolution reaction with respect to hydronium ions were determined.