Use a thin bladed knife, dental scraper, fingernail file or feeler gauge to slip in between the 2 magnets and pry one up. I bought 2 sets and they arrived all stuck together, was a beach to separate them for sure, but it should be doable with the right thin tool. Possibly a pin or a needle would do the trick. Good luck.
I'm stuck on you Nemi, wasn't that a song from the 70's?