Wow, that's a really pretty echeveria. I have a black prince rosette cutting. I had a bad start with echeverias. Things were fine over last summer, but I killed the two I had last fall. In hindsight I'm sure it was overwatering. I had a topsy turvy and another type. The name escapes me at the moment... Now I have four types that I'm hoping
will still be alive this time next year.
That's a beautiful, beautiful addition you have.