Less irritating than the bone tissue ring.

Inner Message by Jungyun Yoon is a ring with engravings in the  interior that leave an impression on the finger.
Yoon was inspired by a Korean song about a man removing a ring he had on for a long time, to only remember it by the impression of the sunburn mark.

More info: Inner Message Ring

- 1 Dollar Jewelry

Perfect for young pretty ladies to give to the older millionaire to be husband.

Your heart rate is one of the four vital signs and this ring makes it incredibly easy to monitor. The infrared technology provides accurate and continuous feedback, whether you’re at work, at play, or at rest. Our Heart Rate Ring features include: heart rate monitor, stopwatch, clock and min/max target heart rate with alert. It comes with one lithium battery and size-reducing insert. One size fits most.

More info: I Heart you Ring

- Find that Urine Light

Pretty neat idea for a wedding ring. This artist records parts of the wedding ceremony (like the part "Yes, I do!") and lasers a cut out of the sound wave.

More info: sakura koshimizu

- Roger Ebert: Your Movie Sucks