Former NFL player Devon Cajuste is trading the ultraphysical for the metaphysical. Cajuste, a Seaford, LI, native, who walked away from the game in January, has spent the first few months of his retirement working as a crystal healer. He’s using his arsenal of 100 precious stones and gems — worth more than $20,000 — to tap into the transcendental energy of an entirely different fan base. “Football was not my passion,” says Cajuste, 26, a towering 6-foot-4 former tight end. “The feeling that I got from [crystals] was greater than any play I made in the game.” A little...