In the first case, a thin ice cloud (often called diamond dust) formed during the late evening hours (between approx. 20:30 and 23:00 UTC) os 08 Feb 2013 in an ice-supersaturated but water-subsaturated environment around -29°C. The ice particles in the cloud were 50 - 100 µm in equivalent diameter and at low number concentrations (1 - 10 particles per liter on average). The second case is a precipitating Nimbostratus cloud during the passage of a cold front on the evening of 27 Jan 2013. In this case, supercooled liquid droplets, and small and large ice crystals were present in vertical velocities of order 5 to 10 m/s from the northern side of the Jungfraujoch. Therefore, both ice particles and supercooled droplets could coexist over a fairly long time period without the ice particles drying out the water droplets. Here we are particularly interested in the ice / liquid water partitioning and the condensation and evaporation processes of cloud droplets in the vicinity of large ice particles. Shown are a comparison of instrument measurements of the cloud particles of the pure ice cloud and mixed-phase cloud in these two cases.