The rings are present, and not two, but three - only not light and dark colors, like green and brown, just dark ones.
However, it doesn't really matter - in normal light it is simply slightly transparent black... I asked only out of curiosity.
Edit: But there is no brown... Rather very, very dark greenish, and very, very dark greyish black ;]
No chance to make a photo with normal camera.
Last edited by Naavy (January 27, 2017 10:31 pm)