Aaron Gordon will never forget his iconic poster dunk over Landry Shamet now ... 'cause TMZ Sports has learned the NBA star just got the moment memorialized with a crazy iced-out pendant!!!
Gordon's jeweler and good pal Buckz The Jeweler gifted the piece to the Denver Nuggets forward this week ... and it's awesome.
It features a mini Gordon in his No. 50 jersey soaring over a mini Shamet ... with 6.54 carats of VS1 diamonds draped over both characters.
The coolest part of the piece, though, is instead of Gordon dunkin' a basketball, he's holding the Larry O'Brien Championship Trophy that he won just a couple months after the Christmas Day 2022 slam.
"This pendant took me and my team 504 hours to bring every last detail to life," Buckz told us. "I knew I had to capture that all-time great moment on a pendant."
Buckz says the piece would typically run his customers somewhere in the area of $20,000 ... but he handed it over to Gordon free of charge as a thank you for believing in him when he was an up-and-comer in the diamond biz.
Buckz tells us ... Gordon came to him for an 18K gold grill last year -- and he'll never forget how the hooper took the chance on him.
Of course, there should be plenty more Gordon moments for Buckz to turn into jewelry going forward ... AG is just 28 years old -- and seems poised for another big run with Denver in 2023-24.