Talk:Guide to the Crystal Gems (Steven Universe)/@comment-27225372-20160115181246/@comment-26462356-20160116213248

The book is titled "Guide to the Crystal Gems", so really only Crystal Gems should be in it.

The background for Peri's page is a star, like any Crystal Gem.

So, it looks to me like Peri is a Crystal Gem already in the book.

(My opinion)