I am no longer completely insane. I came to my senses Saturday morning after a good talk with Hannah. We went ring shopping later in the day and I fell in LOVE with a much more reasonably priced ring that is perfect for me. I feel so ridiculous for putting a dollar amount on my relationship, and for pressuring Jim so much that he thinks he needs to propose ASAP or I'll leave him. I've decided that I can obsess about my upcoming engagement all I want to everyone but Jim. It's working pretty well, four days in. Granted, Jim hasn't really been home, so I don't know if he's noticed, but I'm trying my hardest.
Here's a picture of the ring: