jersey was a commemorative release for the NBA's 75th "Diamond" anniversary season. All on-court jerseys that season, including the Celtics' Icon (green) and Association (white) editions, featured specific "diamond" branding elements to mark the milestone. Key Diamond Design Features
: The authentic versions include a special jock tag at the bottom left, explicitly labeled "75th Anniversary". 21-22 Boston Celtics Diamond Logo Jersey
: The primary hallmark of this jersey is the diamond-textured Nike Swoosh on the right chest and the NBA Logoman on the back neck. These logos feature a faceted, iridescent plastic material that shifts light like a diamond. jersey was a commemorative release for the NBA's