This claw is found in the remains of Daynas Valen while investigating the Gauldur Legend in Folgunthur and is used to open a door leading to Folgunthur Crypt, two treasures rooms, as well as a door at Reachwater Rock.
To do this, you have to get your plate, hold it flat and facing you (close to the wall but not touching it, because if you do it will glitch inside of the gate and you can't get through), and then use Whirlwind Sprint into the plate and through the gate.
Track down the Dunmer behind the Guild's misfortunes. Quest Giver:Mercer Frey Next Quest: Hard Answers Reward: Gallus' Encoded Journal, Word for the Disarm shout ID: TG05 Suggested Level: 62 more rows •
Hard Answers is a Thieves' Guild quest received from Karliah after completing the quest Speaking with Silence.
The Sapphire Dragon Claw is used to open a door in Shroud Hearth Barrow, and is acquired by completing the miscellaneous objective Investigate Shroud Hearth Barrow. In order to obtain this item, speak to Wilhelm, the innkeeper at the Vilemyr Inn in Ivarstead.
There is an alternate entrance located at the top of a canyon that you will find by walking from the location of Snow Veil Sanctum on the map towards Winterhold, but this entrance is barred by an iron gate as an exit to the ruins. The switch to open the aforementioned gate is on the inside.
If you have already completed the related Thieves's Guild quest, the claw is easy to find (In the final room, near the alternate exit). If you haven't finished the quest, you won't be able to reach it yet — also, the cutscene will make it fall from it's resting place (pictured above) onto the floor.
As you enter the cave, you can find the Emerald Dragon Claw on a pedestal along with a note next to a dead adventurer.
Walkthrough. Make your way to Snow Veil Sanctum and have a chat with Mercer who is waiting outside. Mercer will inform you that Karliah is hold up inside Snow Veil Sanctum, so lead the way to the door, which Mercer will unlock, and head inside.
One way to resolve this is: As soon as she turns and heads toward the gate, click Karliah again (A. Talk to Karliah). She will stop and tell you "we'll speak once the Oath is complete". Then she will continue properly to the gate and pull the chain.