The distribution of these elongations in 3D (Fig. ) appears to be very wide but not random and rather organized along a curved plane, which is indicative of the limited morphologies that can be adopted by these crystals. This indicates that particles have one or two preferential elongation directions. Furthermore, this distribution appears mostly independent of their equivalent sphere diameter, indicated by the size and color scale on the graph. For example, the largest particles exhibit anisotropic elongations, and particles aligned along the isotropic line (black line on the graph) display a wide range of equivalent diameter.