@Kristen18 -
I know you want to trade up. If you resell your ring, the best you can hope for is a percentage of what you spent. But if you keep the diamond and trade it up, you'll be able to get 100% for it when trading back to Blue Nile.
I'm just bringing this up as I know you plan to go a different direction and get another ring. Trading up is the way to get back 100% of the value of your stone towards a new diamond.
You can always just sell the setting. Is your ring listed on Loupe Troop? Have you thought about just selling the setting?
This is just so beautiful. I'm really tempted.
Is it white gold?
Do you have an active LT listing for contact?
Would you sell just the diamond??