I've got some general questions regarding the enchantment process. Let me know if you actually want some rolls. (could still use investigative mind if I find it necessary)

Would separating out the dust into pure diamond, pure glass, and pure quartz components improve their effects? As in, do they operate better mixed together, or without impurities?

Second would be, how difficult is it to modify an enchantment that has already been placed? For example, instead of drawing out salt, we draw out bacteria and viruses?