Originally Posted by
LupineChemist
That's a very good question. I know AA stopped giving fast track for sapphires but I do have it with Iberia flights, but I'm an IB oro, no idea if they give it to other programs.
AA's site says Ruby is eligible, but that is for their own lines.
It will say on your printed Boarding pass if you do have it. Definitely Emerald / Business Class, but the above contradicts my knowledge about Sapphire