Spectre: The Ring – Trailer Screencap

Lightened (slightly), color-balanced, and sharpened:

Ring Retouched

Comparing this one to the ring photo from the official site, it looks to me as if this one has more of a rounded bevel on the edges, possibly even touching the center tentacle on the octopus. The tentacles, too, seem longer and pointier on the screencap ring than the prop:

Ring Comparison