How much weight can alum crystals withstand?

The weight that alum crystals can withstand varies depending on their size and structure, as well as the specific type of alum. Generally, alum crystals are relatively brittle and can break under significant stress or pressure. There's no standard weight limit for all alum crystals; their strength is influenced by factors such as purity and crystal formation. For practical purposes, it's essential to handle them gently to avoid breakage.