I played hooky this afternoon and hit a local beach with the PI and worked a trough it had a few good finds in it as well as the ring.. I ran my DFX over the ring and at first the VDI was a -03 then changed to a +08 so its not aluminum and it has a flame inlay all around it, I'm guessing its steel of some sort I weighed it and it is 5 grams...
http://img.photobucket.com/albums/v634/Cfmct/P5150452.jpg
http://img.photobucket.com/albums/v634/Cfmct/P5150452.jpg