So i searched and didnt find anything about it so here it goes,
I went the Forelhost dungeon, south of Riften with the imperial soldier sitting out front who sends you in on a retrieval mission. Well I went through the whole place, which took forever, and got to the end saw the familiar sight of the door with the claw key and the three rings. I then proceeded to go through the place a whole nother time with a fine toothed comb, this took me like 2-3 hours to do all of it, and i could not find the glass claw to save my life.
Is it in there or did i need to pick up some other quest, besides the one the guy gives outside, which would get me it?

I just found glass claw. Glass claw can be found on the level with puzzle door. If you have found crystal that was shooting with lightning bolts, claw is behind that crystal.