francos get expensive really fast... even a 3 mm franco will be costly.... are you trying to wear it solo or with a pendant? I like francos with pendants, but not by itself..
for ropes, 4mm and above look good to me if you want to wear solo without any pendants...
why don't you just get lab diamonds with real gold? even if its real diamonds, you ain't getting **** back when you sell it. might as well get something bigger and nicer if its a splurge..
let me know if anyone looking for a Cuban.. I have a 26 inches 8 mm (136 grams). from Reyes in excellent condition I'll sell for scrap value ($38 per gram).
Thanks.