Brooklyn Nets guard Joe Johnson insists … he’s no jewel thief — and now, he’s lashing back against a lawsuit that says he stole $125,000 worth of bling from an Atlanta diamond dealer.

Aydin & Company filed a lawsuit against Johnson earlier this month, claiming the NBA star entered into a purchase agreement back in October 2010 for $125,500 worth of jewelry.

The items in question — a white gold watch with diamonds, diamond beaded bracelet, black diamond stud earrings and a white gold bezel set rosary.

РReported by TMZ.com