It is well known that there are different mechanisms through which a particle could modify its size and shape, being Ostwald ripening and Aggregative growth classic examples of this. In the first, smaller particles dissolve and their constituents attach to the bigger particles, thus minimizing surface free energy. In the case of crystalline particles, the process also favors the densest crystalline planes (which for ZIF-8 favors the (110) plane, as discussed above) leading to rhombic-dodecahedral-shaped particles over the other faceted intermediates. For aggregative growth, kinetic control of the process takes place, leading to polydisperse aggregates with larger dimensions than the original particles. Figure tracks both, the morphology and size of particles synthesized at different molar ratios over time, related to the discussion above. Figure includes data from reports where individual particles are obtained, while Figure includes data from works where final aggregates are reported. These plots aim to show a statistical trend of the behavior observed for the two regimes studied; i.e., Ostwald ripening and aggregative growth. For low molar ratios, Ostwald ripening should yield particles that increase their size as time elapses, yet retain initial morphology. As it can be seen in Figure , there is no clear dominance of faceted over quasispherical particles at longer times. Different from Ostwald ripening, aggregative mechanisms were also reported for ZIF-8, where pre-formed construction units aggregate to form the final particle. It has been also reported that individual particles tend to have a relatively low polydispersity while aggregates differ in size. In addition, aggregation depends on other variables than excess ratio, probably related to kinetic aspects, such as active mixing through forced convection. As it can be seen in Figure , there is no clear trend with the time evolution of particles resulting from aggregation either.