It is a wide ring, in silver color.
I putted it into the tray to go to the X-Ray and forgot to get it back.
It was around 8:30pm/9:00pm - Jan 4th, 2016, and I was going to Fly American Airlines in gate 8.
To contact me please - igorbotelho@gmail.com or +5511992326263.
JFK Airport Guide
Forgot a RING in the tray of Security Check Terminal 8 - AA