We're told one chain weighed in at 2.2 pounds ... with 60 carats of diamonds. The other weighs 2.65 pounds and sports 70 carats in diamonds.
When it came time to pay, Floyd whipped out a giant stack of cash ... but we're told he was just playin' around -- and did what everyone else does at a jewelry store ... charged it.
Read more: http://www.tmz.com/2016/01/13/floyd-mayweather-250k-jewelry-spree-can-i-pay-in-cash/#ixzz3xHfXsJaE