Search does not work - how unprofessional!!

They have enough money to fix this so there Is NO EXCUSE for it not working. I want to spend $20-30k on a cushion cut color F or better and at least VS2. The search gives me diamonds up to J color and SI. Not even close. I retried the search 10 times! Should I need to wade through hundreds of diamonds to find the ones I seek just for the privilege of giving them tens if thousands of dollars of my hard earned dollars?? Why would they release such s piece of crap app?

Makapuu kid about Blue Nile - Diamond Engagement Rings