Is graphene even a thing? Last I checked it was still a magical hypothetical substance made with pencil shavings and duct tape (that's an exaggeration but only

Is graphene even a thing? Last I checked it was still a magical hypothetical substance made with pencil shavings and duct tape (that's an exaggeration but only a mild one). Every now and then I see news about graphene being the next big thing, like, very soon, but the results I see fail to prove that it's even an actual substance, and the evidence is the lab that made it swearing that it's totally a thing.