Photo Credit: TheStewartofNY/GC Images via Getty Images Gigi Hadid posted a snapshot of a new gold dog-tag necklace on her Instagram. It is a 14k yellow gold trimmed with a little under half a carat of diamonds, designed by Sheryl Lowe, a wink at her romance with Bradley Cooper. Anyone squinting at the engraving could see “G ? B” right away, her initial, along with a white heart emoji, and Cooper’s initial. The pendant reportedly sells for $2,99…