Hi Anja,
This looks like Echeveria 'Topsy Turvy' with its upside down leaves. It probably needs more light than what it seems to be getting - do you have a fluorescent tube fixture that you can put it under?
Hi Anja, I have one of these plants. Mine is in a west window, but just off to the side so as to stay out of "direct" sunshine. I see your in MN, I'm in Chgo. In the summer these plants just love it outside, but again..mine only has the morning sunshine then. Good luck, they are fun. Roxanne