Ezekiel Elliott Cops Reversible Jersey Number Chain, Worth $260k! |

NEW NUMBER, NEW CHAIN

It doesn't matter what number Ezekiel Elliott is rocking on the field, 'cause he won't have to choose between digits off it -- the New England Patriots star just copped a diamond chain that reps both his old AND new look ... and we're told it's worth a whopping $260k!!

TMZ Sports has learned, Zeke wanted a new piece in honor of his new No. 15 with the Pats ... so he hit up celeb diamond setter Gabriel French for the job.

But, Elliott -- who inked a one-year, $3 million deal with the Pats this offseason -- isn't leaving his Cowboys career in the past ... 'cause the pendant's reverse side displays "21," the number he wore during his time in Dallas.

We're told the pendant was made with 70 carats of VVS emerald and brilliant cut diamonds ... and the Cuban chain consists of 70 carats of emerald and round cut diamonds.

Gabriel has worked with a ton of big names in the NFL over the years ... including Odell Beckham, Jr., Jalen Hurts, Amari Cooper and Aaron Donald.

No word on how much Zeke actually shelled out for the piece ... but he's made more than $70 million over the course of his career, so he can afford to treat himself.