This adamantine ring moves from finger to finger, much in the same way that you can move from place to place while wearing it.
Ring Slot 325,000 gp
You gain a +3 item bonus to Thievery checks.
Power (Teleportation) Daily (Minor Action)
Teleport 1d4 squares.
Sustain Minor: Teleport 1d4 squares at the start of your turn.
If you've reached at least one milestone today, you do not need to use a minor action to sustain the item's effect.
Published in Adventurer's Vault, page(s) 155.