Beautiful book mark, sadly it is as dangerous for your book as it is beautiful. If you're not careful it will rip your pages and it slips out. 2 stars because its pretty to look at.
It also has really sharp edges.

This is the second page from this book that this marker has ruined. I'm changing markers and putting this one as a display on my desk, because otherwise I don't recommend it unless you don't take your book outside of your room and barely move it