Netzach
I've not voted because I tend not to cleanse my crystals. However, I do have an amethyst among them and that's pretty good for cleaning everything around it.
However, I know for a fact that it is a good idea to clean crystals such as rose quartz if they are in a "working environment". A friend of mine, an osteopath, had a huge chunk of rose quartz on the desk in his consulting room. He didn't clean it - but over the years it absorbed all the nasty vibes that patients were bringing in with them. And one day it just shattered. It was then that someone told him that he should have been cleaning it regularly!
However, I know for a fact that it is a good idea to clean crystals such as rose quartz if they are in a "working environment". A friend of mine, an osteopath, had a huge chunk of rose quartz on the desk in his consulting room. He didn't clean it - but over the years it absorbed all the nasty vibes that patients were bringing in with them. And one day it just shattered. It was then that someone told him that he should have been cleaning it regularly!