Crystal Healing

my bf has asked for engagement ring ideas!! he's going to be picking it out on his own but needed some direction (we've been dating 3 years).

I've been hoping for this moment for the past year so I've got some rings picked out. which do you like best?!!

http://www.shaneco.com/catalog/productdetail.asp?ProductID=28341&PageLevelID=1178&fromPage= (this is my fav b/c it looks like a butterfly and I LOVE butterflies).

http://www.faycullen.com/ring_settings/500/517md-hailey.html (I can customize this one so that the stones surrounding the diamond are amethsyt)

http://www.ringdesigner.com/mountings/engagement_rings/fullsize/LPWC23011P.htm (will be white gold band with center princess cut diamond and amethyst side stones and a matching wedding band with amethyst and diamond stones alternating).

I'm having trouble deciding which one to go with!!! I have really tiny fingers so the carat on the last 2 will be no more than 1 carat (my ring size is 3.5)

thanks guys!!!