I'm super late to this thread, but when I saw that Ame created it I just KNEW there would be something very special and *perfect* here….and I was right! Your diamond looks so at home in its new setting -- the prongs, shank, and overall proportions are spot-on. PURE BEAUTY. You have a gift for finding just the right settings, bands, and stacks! I think it's fine that the Etsy spacer is just a hair thinner -- that creates a very subtle/barely detectable mis-matchiness that actually makes the stack even more elegant, IMHO. Thumbs way up!!!