Future NY Giants star Kayvon Thibodeaux was shinin' brighter than the Las Vegas lights -- with this insane 30-carat diamond pendant the DE rocked while being drafted 5th overall by the G-Men.
Jeweler Saki Diamonds tells TMZ Sports he made KT the iced out chain to honor his "Jream" (pronounced dream) foundation ... where Kayvon helps underprivileged kids.
"It meant a lot to me," Saki, a former football coach (before he switch professions), told us.
The pendant looks just like the Jream logo .