Wowpedia

Casting the First Stone
Start	Elric Whalgrene
End	Elric Whalgrene
Level	120 (Requires 120)
Category	Alchemy
Experience	4,450
Rewards	5 85
Next	[50] Ocular Extracts; [50] Changing the Scenery

Objectives

Craft a Potion of Durability and a Potion of Shifting States using the recipes given to you. You can find the ingredients you need in Elric's shop.

Categories
Alchemy quests
Alliance quests
Quests at 120
Boralus quests

Would you mind helping me out with something, <name>?

You see, I have this recipe that, well, I only have half of currently. I've been trying to remember the other half but just can't seem to recall it.

My EX-partner tore the recipe and ran off with the other half over a disagreement we were having. But the stone it makes is invaluable.

How about you grab some vials and start mixing the ingredients on this list. Perhaps together we can figure this out.

You will receive:

I wouldn't dare ask for the other half back, not after what Quintin said to me. I'll get this mystery figured out, you'll see.

Let's give it a try, shall we?