User blog comment:Miskos3/Fairy Tail 520: Dragon or Demon, Review/@comment-4933386-20170205092919/@comment-1776824-20170209024335

No, a dragon lacrima is a lacrima enchanted with dragon magic. The lacrima is then implanted in the human. If it was the same, then Cobra and Laxus (definitely the latter) would be dragons already. It clearly functions the same, minus the drawback of becoming a dragon.