The Emerald Dragon Claw is an artifact in the video game The Elder Scrolls V: Skyrim
It is found on top of a pedestal near the body of a dead adventurer in Reachwater Rock
It is used to open a Ring Door Puzzle in that location. The solution to the puzzle is on the claw itself and you can see it by examining the claw[1]:
Outer Ring: Bear
Middle Ring: Whale
Inner Ring: Snake