换半圈方钻的channel band吧，类似这种[url=http://www.tiffany.com/jewelry/rings/princess-cut-band-ring-GRP01702?fromGrid=1&search_params=p+1-n+10000-c+287466-s+5-r+-t+-ni+1-x+-lr+-hr+-ri+-mi+-pp+13089+22&search=0&origin=browse&searchkeyword=&trackpdp=bg&fromcid=287466]http://www.tiffany.com/jewelry/rings/princess-cut-band-ring-GRP01702?fromGrid=1&search_params=p+1-n+10000-c+287466-s+5-r+-t+-ni+1-x+-lr+-hr+-ri+-mi+-pp+13089+22&search=0&origin=browse&searchkeyword=&trackpdp=bg&fromcid=287466[/url]