By what gems or rocks that are in it and our ask a local jeweler.
Or if it looks shinny! :P
That depends upon what the ring weighs, but I can tell you that gold prices at the present time (2012) are extremely high. Any gold ring is valuable.
Some valuable MTG LOTR ring cards highly sought after by collectors include "The One Ring," "Ring of Thune," and "Ring of Ma'ruf."
its a vary valuable ring worth 8000 rubes
The wedding ring was valuable. Max broke mum's valuable vase. The delicacy was elegant, but also valuable.
They tell the time!
Not very. How can 1 ring tell your feelings.
The mood ring was a ring that could (supposedly) tell your mood
2001 Super Bowl Ring
Its a number thats on ring to tell you what edition it is , that if theres more then that one ring but the same types
You can tell if he is married or not by noting various things. You can check his body language for that . You can see if he is wearing any ring on his ring finger.
2001 Super Bowl Ring
It is hard too tell if you do not have an actual ring sizer at your house, but my advice to you would be to go to the local jewelry store. Or any place that sells rings for that matter, and they have ring sizers.